An error occurred while executing a save: Expression evaluation error: Invalid index: Cannot index property 'medicalScientist' of type String into type List of Variant

Hi all,

An error occurred while executing a save: Expression evaluation error: Invalid index: Cannot index property 'medicalScientist' of type String into type List of Variant.

I got the above error for this code can any one help me out on this

a!localVariables(
  local!availableCollabsAmdsPagingInfo: a!pagingInfo(
    startIndex: 1,
    batchSize: cons!ISR_INT_BATCH_SIZE_EXTRA_LARGE
  ),
  local!selectedCollabsAmdsPagingInfo: a!pagingInfo(
    startIndex: 1,
    batchSize: cons!ISR_INT_BATCH_SIZE_EXTRA_LARGE
  ),
  local!userTimeZOne: rule!CMN_er_populateUserTimeZone(user: loggedInUser()),
  local!availableCollabsAmdsDataSubset: rule!ISR_er_FetchISRAndCollabsAmendmentsDataForIRCGRCMeeting(
    therapeuticAreaIds: ri!therapeuticAreaIds,
    pagingInfo: local!availableCollabsAmdsPagingInfo,
    researchType: cons!ISR_TXT_GRC_RESEARCH_TYPE_LIST
  ),
  local!collabsAmdSelection: ri!selectedCollabsAmds,
  local!collabsAmdSelectedRows: a!refreshVariable(
    value: ri!collabsAmdSelectedRows,
    refreshOnVarChange: ri!buttonActionMeetingTypeChange
  ), 
  local!collabsAmdMedicalScientists,
  local!selectedCollabsAmdsDataSubset: a!dataSubset(
    startIndex: index(local!selectedCollabsAmdsPagingInfo, "startIndex", 1),
    batchSize: index(local!selectedCollabsAmdsPagingInfo, "batchSize", -1),
    sort: index(local!selectedCollabsAmdsPagingInfo, "sort", {}),
    totalCount: count(index(local!collabsAmdSelectedRows, "amdId", {})),
    data: local!collabsAmdSelectedRows,
    identifiers: index(local!collabsAmdSelectedRows, "amdId", {})
  ),
  {
    /*Amendments*/
    a!boxLayout(
      label: "Available Collaborative Amendments",
      contents: {
        a!gridField(
          label: "",
          emptyGridMessage: "No Collaborative Amendments Available",
          data: local!availableCollabsAmdsDataSubset,
          columns: {
            a!gridColumn(
              label: "Amendment Number",
              value: a!richTextDisplayField(
                value: a!richTextItem(
                  text: fv!row.amendmentNumber,
                  link: a!recordLink(
                    recordType: cons!ISR_RECORD_GS_AMENDMENT,
                    identifier: fv!row.amdId
                  ),
                  linkStyle: "STANDALONE"
                )
              ),
              align: "START",
              width: "1X"
            ),
            a!gridColumn(
              label: "Amendment Reason",
              value: a!localVariables(
                local!Id,
                rule!CMN_c_CompressAndExpandTheParagraphText(
                  savedLocalVariable: local!Id,
                  identifier: fv!identifier,
                  text: fv!row.amendmentReason
                )
              ),
              align: "START",
              width: "2X"
            ),
            a!gridColumn(
              label: "Proposal Number",
              value: a!richTextDisplayField(
                value: a!richTextItem(
                  text: fv!row.proposalNumber,
                  link: a!recordLink(
                    recordType: cons!ISR_RECORD_GS_APPLICATION,
                    identifier: fv!row.proposalId
                  ),
                  linkStyle: "STANDALONE"
                )
              ),
              align: "START",
              width: "2X"
            ),
            a!gridColumn(
              label: "Principal Investigator",
              value: a!richTextDisplayField(
                value: a!richTextItem(
                  text: fv!row.primaryResearcher
                )
              ),
              align: "START",
              width: "2X"
            ),
            a!gridColumn(
              label: "Study Title",
              value: a!localVariables(
                local!Id,
                rule!CMN_c_CompressAndExpandTheParagraphText(
                  savedLocalVariable: local!Id,
                  identifier: fv!identifier,
                  text: fv!row.studyTitle,
                  textCompressLength: cons!ISR_TEXT_COMPRESS_LENGTH
                )
              ),
              align: "START",
              width: "2X"
            ),
            /*a!gridColumn(*/
              /*label: "Currency Code",*/
              /*value: a!richTextDisplayField(*/
                /*value: a!richTextItem(text: fv!row.currencyCode)*/
              /*),*/
              /*align: "START"*/
              /*width:"2X"*/
/**/
            /*),*/
            a!gridColumn(
              label: "Amendment Budget",
              value: a!richTextDisplayField(
                value: a!richTextItem(
                  text: 
                  if(rule!APN_isBlank( fv!row.convertedIncrementalBudget),
                  0.00,
                  fixed(index(fv!row, "ConvertedIncrementalBudget", ""), 2)
                ))
              ),
              helpTooltip: "Additional Requested Budget",
              align: "END"

            ),
            a!gridColumn(
              label: "Country",
              value: a!imageField(
                images: a!documentImage(
                  document: rule!APN_getIsoCountryFlag(countryCode: fv!row.countryCode),
                  caption: fv!row.countryName
                )
              ),
              width: "1X",
              align: "CENTER"
            ),
            a!gridColumn(
              label: "Therapeutic Area",
              value: a!localVariables(
                local!Id,
                rule!CMN_c_CompressAndExpandTheParagraphText(
                  savedLocalVariable: local!Id,
                  identifier: fv!identifier,
                  text: fv!row.therapeuticArea
                )
              ),
              align: "START",
              width: "2X"
            ),
            a!gridColumn(
              label: "Medical Scientist / Project Champion",
              value: a!richTextDisplayField(
                value: a!richTextItem(
                  text: rule!APN_displayUser(fv!row.medicalScientist)
                ),
                showWhen: not(rule!APN_isBlank(fv!row.medicalScientist)),
              ),
              align: "START",
              width: "2X"
            ),
            a!gridColumn(
              label: "Slides",
              value: a!imageField(
                images: a!documentImage(
                  document: cons!ISR_ICON_PRESENTATION,
                  altText: "Slide",
                  caption: concat(
                    "Click here to download",
                    " ",
                    document(fv!row.mastSlideDocId, "name")
                  ),
                  link: a!documentDownloadLink(document: fv!row.mastSlideDocId)
                ),
                align: "CENTER",
                showWhen: not(
                  rule!APN_isBlank(fv!row.mastSlideDocId)
                )
              ),
              align: "CENTER",
              width: "ICON_PLUS"
            ),
            a!gridColumn(
              label: "RC Slide uploaded on",
              value: a!richTextDisplayField(
                value: a!richTextItem(
                  text: concat(
                    rule!ISR_er_RFPconvertDateTIMEFormat(
                      showTimeZone: false(),
                      date: index(
                        rule!ISR_qry_GetAmendmentStudyByCriteria(amdId: fv!row.amdId),
                        "rcSlideUploadedOn",
                        {}
                      )
                    ),
                    if(
                      rule!APN_isBlank(
                        index(
                          rule!ISR_qry_GetAmendmentStudyByCriteria(amdId: fv!row.amdId),
                          "rcSlideUploadedOn",
                          {}
                        )
                      ),
                      {},
                      local!userTimeZOne
                    ),

                  ),
                  style: "EMPHASIS",
                  size: "STANDARD",

                )
              ),
              align: "CENTER",
              width: "2X"
            ),
          },
          pagingSaveInto: local!availableCollabsAmdsPagingInfo,
          selectable: true(),
          selectionStyle: "CHECKBOX",
          selectionValue: local!collabsAmdSelection,
          selectionSaveInto: {
            local!collabsAmdSelection,
            a!save(ri!selectedCollabsAmds, local!collabsAmdSelection),
            a!save(
              local!collabsAmdSelectedRows,
              append(local!collabsAmdSelectedRows, fv!selectedRows)
            ),
            a!save(
              local!collabsAmdSelectedRows,
              remove(
                local!collabsAmdSelectedRows,
                wherecontains(
                  tointeger(index(fv!deselectedRows, "amdId", {})),
                  tointeger(
                    index(local!collabsAmdSelectedRows, "amdId", {})
                  )
                )
              )
            ),
            /*a!save(*/
              /*local!collabsAmdSelectedRows,*/
              /*difference(*/
                /*local!collabsAmdSelectedRows,*/
                /*fv!deselectedRows*/
              /*)*/
            /*),*/
            a!save(ri!collabsAmdSelectedRows,local!collabsAmdSelectedRows),
            /*Populating Medical Scientists*/
            a!save(
              local!collabsAmdMedicalScientists,
              local!collabsAmdSelectedRows.medicalScientist
            ),
            a!save(
              ri!collabsAmdMedicalScientists,
              remove(
                local!collabsAmdMedicalScientists,
                wherecontains(
                  null,
                  touniformstring(local!collabsAmdMedicalScientists)
                )
              )
            )
          },
          spacing: "DENSE"
        )
      },
      style: cons!CMN_COLOR_GILEAD_RED,
      marginBelow: "STANDARD",
      showWhen: not(
        rule!APN_isBlank(ri!therapeuticAreaIds)
      )
    ),
    a!richTextDisplayField(
      labelPosition: "COLLAPSED",
      value: {
        a!richTextIcon(
          icon: "refresh",
          caption: "Refresh Medical Scientist",
          link: a!dynamicLink(
            saveInto: {
              a!save(
                local!availableCollabsAmdsDataSubset,
                rule!ISR_er_FetchISRAndCollabsAmendmentsDataForIRCGRCMeeting(
                  therapeuticAreaIds: ri!therapeuticAreaIds,
                  pagingInfo: local!availableCollabsAmdsPagingInfo,
                  researchType: cons!ISR_TXT_GRC_RESEARCH_TYPE_LIST
                )
              ),
              a!save(
                local!collabsAmdSelectedRows,
                index(
                  index(
                    local!availableCollabsAmdsDataSubset,
                    "data",
                    {}
                  ),
                  wherecontains(
                    tointeger(local!collabsAmdSelection),
                    tointeger(
                      index(
                        index(
                          local!availableCollabsAmdsDataSubset,
                          "data",
                          {}
                        ),
                        "amdId",
                        {}
                      )
                    )
                  ),
                  {}
                )
              ),
              a!save(
                local!collabsAmdMedicalScientists,
                local!collabsAmdSelectedRows.medicalScientist
              ),
              a!save(
                ri!collabsAmdMedicalScientists,
                remove(
                  local!collabsAmdMedicalScientists,
                  wherecontains(
                    null,
                    touniformstring(local!collabsAmdMedicalScientists)
                  )
                )
              )
            }
          ),
          size: "LARGE"
        )
      },
      align: "RIGHT",
      showWhen: not(
        rule!APN_isEmpty(local!collabsAmdSelectedRows)
      )
    ),
    a!boxLayout(
      label: "Selected Collaborative Amendments",
      style: cons!CMN_COLOR_GILEAD_RED,
      marginBelow: "STANDARD",
      contents: {
        rule!ISR_g_SelectedAmds(
          data: local!selectedCollabsAmdsDataSubset,
          pagingInfo: local!selectedCollabsAmdsPagingInfo,
          isShowOnDashboard: false(),
          selectedAmdId: ri!selectedAmdId,
          amdPrimaryReviewer: ri!amdPrimaryReviewer,
          amdAdhocReviewer: ri!amdAdhocReviewer,
          showAmdHelpText: ri!showAmdHelpText,
          readOnly: False()
        )
      },
      showWhen: not(
        rule!APN_isBlank(local!collabsAmdSelectedRows)
      )
    )
  }
)