Is there a way to use a!IsNotNull for indexes of local variables?

So I have this code that works when I test the interface, but when the test values are empty it displays this:

I want to still display the interface while the index List is empty. I tried a few things but so far nothing has worked.

Here's the text field's code:

a!textField(
                label: "Program",
                labelPosition: "ABOVE",
                value: index(local!program[ri!tpsRequest['recordType!{63733d83-c1fa-4244-bcca-b0ddcccccbf4}DS_TPS.fields.{dbc3f6e3-0ead-4aec-969e-561c93c12055}programID']], 'recordType!{0ad1112a-64a6-465e-99da-48e839d78914}APR Program.fields.{64faa577-dd6f-4073-902d-57142bb77458}name'),
                align: "LEFT",
                readonly: true,
              ),

And here's the entirety of the code:

{
  
  a!sectionLayout(
    contents: rule!ACE_SCT_DynamicBreadCrumbTrail(isInterfaceDark: false, recordName: cons!ASK_TEXT_LABEL_REQUEST),
    divider: "BELOW"
  ),
  rule!ASK_SCT_RequestDetails(request: ri!request),
  a!sectionLayout(
    contents: {
      rule!ASK_CMPT_RequestItem(
        requestId: ri!request['recordType!{2ae53002-5d92-42a2-9e49-f4da57bb5aa7}ASK Request.fields.{ed63ad73-08ba-4d6b-9c2f-1ce50a57539d}requestId'],
        creator: ri!request['recordType!{2ae53002-5d92-42a2-9e49-f4da57bb5aa7}ASK Request.fields.{44296bb8-930b-4e55-9167-99f4b89703b3}createdBy']
      )
    },
    marginAbove: "STANDARD"
  ),
  a!sectionLayout(
    contents: {
      rule!ASK_CMPT_requestDocuments(
        requestId: ri!request['recordType!{2ae53002-5d92-42a2-9e49-f4da57bb5aa7}ASK Request.fields.{ed63ad73-08ba-4d6b-9c2f-1ce50a57539d}requestId']
      )
    },
    marginAbove: "STANDARD"
  ),
  a!localVariables(
      local!program: rule!DS_GetProgramById(ri!tpsRequest['recordType!{63733d83-c1fa-4244-bcca-b0ddcccccbf4}DS_TPS.fields.{dbc3f6e3-0ead-4aec-969e-561c93c12055}programID']),
      local!subsystem: rule!DS_GetSubsystemById(ri!tpsRequest['recordType!{63733d83-c1fa-4244-bcca-b0ddcccccbf4}DS_TPS.fields.{d60344f1-87aa-4adc-852f-13a6f0c0a4b1}subSystemID']),
  a!sectionLayout(
    label: "TPS Requestor Input:",
    labelSize: "MEDIUM",
    labelColor: "#434343",
    contents: {
      a!columnsLayout(
        columns: {
          a!columnLayout(
            contents: {
              a!textField(
                label: "Program",
                labelPosition: "ABOVE",
                value: index(local!program[ri!tpsRequest['recordType!{63733d83-c1fa-4244-bcca-b0ddcccccbf4}DS_TPS.fields.{dbc3f6e3-0ead-4aec-969e-561c93c12055}programID']], 'recordType!{0ad1112a-64a6-465e-99da-48e839d78914}APR Program.fields.{64faa577-dd6f-4073-902d-57142bb77458}name'),
                align: "LEFT",
                readonly: true,
              ),
              a!textField(
                /*working!*/
                label: "Subsystem",
                labelPosition: "ABOVE",
                value: index(local!subsystem, 'recordType!{d76a6e25-762d-4976-a4e7-c4c6dd9a9078}APR Subsystem.fields.{ae57477a-ebae-40fb-afd9-eff4d99b175a}name', "-"),
                align: "LEFT",
                readonly: true,
              ),
              a!columnsLayout(
                columns: {
                  a!columnLayout(
                    contents: {
                      a!dateField(
                        label: "TPS Need Date",
                        labelPosition: "ABOVE",
                        helpTooltip: "When TPS is needed by.",
                        value: 
                        a!defaultValue(
                         ri!tpsRequest['recordType!{63733d83-c1fa-4244-bcca-b0ddcccccbf4}DS_TPS.fields.{e58bfbb2-7937-4018-badb-7dcb99407bd5}TPSNeed'],
                          "N/A"),
                        saveInto: ri!tpsRequest['recordType!{63733d83-c1fa-4244-bcca-b0ddcccccbf4}DS_TPS.fields.{e58bfbb2-7937-4018-badb-7dcb99407bd5}TPSNeed'],
                        required: true,
                        readOnly: true,
                        validations: {}
                      ),
                      a!dateField(
                        label: "Proposed End Date",
                        labelPosition: "ABOVE",
                        helpTooltip: "Proposed end date for completed work",
                        value: 
                        a!defaultValue(
                          ri!tpsRequest['recordType!{63733d83-c1fa-4244-bcca-b0ddcccccbf4}DS_TPS.fields.{a0d54b00-c10e-4e2e-bdf7-fa7353b672f4}proposedDate'],
                          "N/A"),
                        saveInto: ri!tpsRequest['recordType!{63733d83-c1fa-4244-bcca-b0ddcccccbf4}DS_TPS.fields.{a0d54b00-c10e-4e2e-bdf7-fa7353b672f4}proposedDate'],
                        required: true,
                        readOnly: true,
                        validations: {}
                      )
                    }
                  )
                },
                marginAbove: "NONE",
                marginBelow: "NONE"
              )
            },
            width: "MEDIUM"
          ),
          a!columnLayout(
            contents: {
              a!sideBySideLayout(
                items: {
                  a!sideBySideItem(
                    item: a!textField(
                      label: "Task Location",
                      labelPosition: "ABOVE",
                      helpTooltip: "Current building and lab location of the task.",
                      value: ri!tpsRequest['recordType!{63733d83-c1fa-4244-bcca-b0ddcccccbf4}DS_TPS.fields.{2b3a1ca7-d736-4625-8321-89dea463481e}taskLocation'],
                      saveInto: ri!tpsRequest['recordType!{63733d83-c1fa-4244-bcca-b0ddcccccbf4}DS_TPS.fields.{2b3a1ca7-d736-4625-8321-89dea463481e}taskLocation'],
                      refreshAfter: "UNFOCUS",
                      required: true,
                      readOnly: true,
                      validations: {}
                    )
                  ),
                  a!sideBySideItem(
                    item: a!textField(
                      label: "Hardware Class",
                      labelPosition: "ABOVE",
                      placeholder: "Hardware Class",
                      value: ri!tpsRequest['recordType!{63733d83-c1fa-4244-bcca-b0ddcccccbf4}DS_TPS.fields.{1b3a0669-e51a-4b77-aa57-7002d19e9610}hardwareClass'],
                      saveInto: ri!tpsRequest['recordType!{63733d83-c1fa-4244-bcca-b0ddcccccbf4}DS_TPS.fields.{1b3a0669-e51a-4b77-aa57-7002d19e9610}hardwareClass'],
                      refreshAfter: "UNFOCUS",
                      readOnly: true,
                      validations: {}
                    )
                  ),
                  a!sideBySideItem(
                    item: a!integerField(
                      label: "Drawing Number(s)",
                      labelPosition: "ABOVE",
                      helpTooltip: "Relevant drawings and drawing numbers.",
                      value: ri!tpsRequest['recordType!{63733d83-c1fa-4244-bcca-b0ddcccccbf4}DS_TPS.fields.{feb1c8f3-a2ee-4f7c-a7c3-7949054fc87b}drawingNumber'],
                      saveInto:ri!tpsRequest['recordType!{63733d83-c1fa-4244-bcca-b0ddcccccbf4}DS_TPS.fields.{feb1c8f3-a2ee-4f7c-a7c3-7949054fc87b}drawingNumber'],
                      refreshAfter: "UNFOCUS",
                      required: true,
                      readOnly: true,
                      validations: {}
                    ),
                    width: "AUTO"
                  )
                },
                alignVertical: "MIDDLE",
                spacing: "STANDARD"
              ),
              a!sideBySideLayout(
                items: {
                  a!sideBySideItem(
                    item: a!integerField(
                      label: "Purchase Order",
                      labelPosition: "ABOVE",
                      helpTooltip: "Purchase Order or AxCES PR.",
                      value: ri!tpsRequest['recordType!{63733d83-c1fa-4244-bcca-b0ddcccccbf4}DS_TPS.fields.{17ff2ac8-2b96-4d83-b1b8-01f576051b86}purchaseOrder'],
                      saveInto: ri!tpsRequest['recordType!{63733d83-c1fa-4244-bcca-b0ddcccccbf4}DS_TPS.fields.{17ff2ac8-2b96-4d83-b1b8-01f576051b86}purchaseOrder'],
                      refreshAfter: "UNFOCUS",
                      required: true,
                      readOnly: true,
                      validations: {}
                    )
                  ),
                  a!sideBySideItem(
                    item: a!integerField(
                      label: "Serial Number(s)",
                      labelPosition: "ABOVE",
                      helpTooltip: "Assigned Serial Number(s) (if applicable).",
                      value: ri!tpsRequest['recordType!{63733d83-c1fa-4244-bcca-b0ddcccccbf4}DS_TPS.fields.{40328bdb-c666-431b-9522-7db086f73f07}serialNumber'],
                      saveInto: ri!tpsRequest['recordType!{63733d83-c1fa-4244-bcca-b0ddcccccbf4}DS_TPS.fields.{40328bdb-c666-431b-9522-7db086f73f07}serialNumber'],
                      refreshAfter: "UNFOCUS",
                      required: true,
                      readOnly: true,
                      validations: {}
                    )
                  ),
                  a!sideBySideItem(
                    item: a!integerField(
                      label: "Lot Number(s)",
                      labelPosition: "ABOVE",
                      helpTooltip: "Assigned Lot Number(s) (if applicable).",
                      value: ri!tpsRequest['recordType!{63733d83-c1fa-4244-bcca-b0ddcccccbf4}DS_TPS.fields.{50f449bd-2d08-4501-87da-12876552066b}lotNum'],
                      saveInto: ri!tpsRequest['recordType!{63733d83-c1fa-4244-bcca-b0ddcccccbf4}DS_TPS.fields.{50f449bd-2d08-4501-87da-12876552066b}lotNum'],
                      refreshAfter: "UNFOCUS",
                      required: true,
                      readOnly: true,
                      validations: {}
                    )
                  )
                },
                spacing: "STANDARD"
              ),
              a!sideBySideLayout(
                items: {
                  a!sideBySideItem(
                    item: a!textField(
                      label: "Request Title",
                      labelPosition: "ABOVE",
                      helpTooltip: "Title of the TPS request.",
                      value: ri!tpsRequest['recordType!{63733d83-c1fa-4244-bcca-b0ddcccccbf4}DS_TPS.fields.{6187884e-4bd3-4f29-95d1-c2c9e1c90ea5}TPSTitle'],
                      saveInto: ri!tpsRequest['recordType!{63733d83-c1fa-4244-bcca-b0ddcccccbf4}DS_TPS.fields.{6187884e-4bd3-4f29-95d1-c2c9e1c90ea5}TPSTitle'],
                      refreshAfter: "UNFOCUS",
                      required: true,
                      readOnly: true,
                      validations: {},
                      align: "LEFT"
                    ),
                    width: "AUTO"
                  ),
                  a!sideBySideItem(
                    item: a!textField(
                      label: "Parts Location",
                      labelPosition: "ABOVE",
                      helpTooltip: "Current building and lab location of the parts.",
                      value: ri!tpsRequest['recordType!{63733d83-c1fa-4244-bcca-b0ddcccccbf4}DS_TPS.fields.{c6ba2c33-e732-41a9-8363-f602febddab1}partsLocation'],
                      saveInto: ri!tpsRequest['recordType!{63733d83-c1fa-4244-bcca-b0ddcccccbf4}DS_TPS.fields.{c6ba2c33-e732-41a9-8363-f602febddab1}partsLocation'],
                      refreshAfter: "UNFOCUS",
                      required: true,
                      readOnly: true,
                      validations: {}
                    )
                  ),
                  a!sideBySideItem(
                    item: a!integerField(
                      label: "Parts Quantity",
                      labelPosition: "ABOVE",
                      helpTooltip: "Bill of Materials and Quantity of items/parts.",
                      value:ri!tpsRequest['recordType!{63733d83-c1fa-4244-bcca-b0ddcccccbf4}DS_TPS.fields.{a50bd1c2-853e-4978-8fc0-669280707b77}quantity'],
                      saveInto: ri!tpsRequest['recordType!{63733d83-c1fa-4244-bcca-b0ddcccccbf4}DS_TPS.fields.{a50bd1c2-853e-4978-8fc0-669280707b77}quantity'],
                      refreshAfter: "UNFOCUS",
                      required: true,
                      readOnly: true,
                      validations: {}
                    )
                  )
                },
                alignVertical: "MIDDLE",
                spacing: "STANDARD"
              ),
              a!sideBySideLayout(
                items: {
                  a!sideBySideItem(
                    item: a!paragraphField(
                      label: "Task Outline",
                      labelPosition: "ABOVE",
                      value: ri!tpsRequest['recordType!{63733d83-c1fa-4244-bcca-b0ddcccccbf4}DS_TPS.fields.{9b6b98e7-ecce-4faf-8718-b3036ebcff8b}taskOutline'],
                      saveInto: ri!tpsRequest['recordType!{63733d83-c1fa-4244-bcca-b0ddcccccbf4}DS_TPS.fields.{9b6b98e7-ecce-4faf-8718-b3036ebcff8b}taskOutline'],
                      refreshAfter: "UNFOCUS",
                      height: "SHORT",
                      required: true,
                      readOnly: true,
                      validations: {}
                    ),
                    width: ""
                  ),
                  a!sideBySideItem(
                    item: a!paragraphField(
                      label: "Additional Comments",
                      labelPosition: "ABOVE",
                      value: ri!tpsRequest['recordType!{63733d83-c1fa-4244-bcca-b0ddcccccbf4}DS_TPS.fields.{0c30750a-4d38-477f-81b4-43401237ada2}comments'],
                      saveInto: ri!tpsRequest['recordType!{63733d83-c1fa-4244-bcca-b0ddcccccbf4}DS_TPS.fields.{0c30750a-4d38-477f-81b4-43401237ada2}comments'],
                      refreshAfter: "UNFOCUS",
                      height: "SHORT",
                      required: true,
                      readOnly: true,
                      validations: {}
                    ),
                    width: "2X"
                  )
                }
              )
            },
            width: "AUTO"
          )
        }
      )
    },
    /*showWhen: a!isNotNullOrEmpty(ri!tpsRequest),*/
    isCollapsible: true,
    marginBelow: "MORE"
    )
  ),
  rule!ASK_SCT_Comment(
    requestId: ri!request['recordType!{2ae53002-5d92-42a2-9e49-f4da57bb5aa7}ASK Request.fields.{ed63ad73-08ba-4d6b-9c2f-1ce50a57539d}requestId'],
    readOnly: or(
      a!isUserMemberOfGroup(username: loggedInUser(), groups: cons!ASK_GRP_VIEWERS),
      ri!request['recordType!{2ae53002-5d92-42a2-9e49-f4da57bb5aa7}ASK Request.fields.{97a60319-ec9d-4e4f-b592-9494bc39d14e}statusId'] = cons!ASK_REQUEST_STATUS_COMPLETE
    )
  )
}

This is what the interface looks like when the values are populated:

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