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

Question

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: