selectable grid

i have a requirement 

where i'll be selecting the checkbox and once i select the checkbox need to show the show data link, when i click that ink some data to be displayed at right side for the same selected checkbox

now what is happening is when i select next check box the show data link is not coming. 

can anyone help me to work on this - when i select single check box the show data should come and one i click on that right side some data to be shown. when i select multiple checkbox only latest selected checkbox has to be have show data link

a!localVariables(
  local!limitSelection_cdt: rule!CR_SF_QE_getLimitSelectionData(
    cif_int: ri!cif_int,
    requestId_int: ri!requestId_int
  ),
  local!limitsList: index(
    local!limitSelection_cdt,
    "limitId_txt",
    {}
  ),
  local!showLimitData: false(),
  {
    rule!CR_SC_SF_customerDetails(
      cif_int: ri!cif_int,
      requestId_int: ri!requestId_int
    ),
    a!columnsLayout(
      columns: {
        a!columnLayout(
          contents: {
            a!gridLayout(
              headerCells: {
                a!gridLayoutHeaderCell(label: cons!CR_SF_ALL_LABELS[10]),
                a!gridLayoutHeaderCell(label: "")
              },
              columnConfigs: {
                a!gridLayoutColumnConfig(width: "DISTRIBUTE", weight: 2),
                a!gridLayoutColumnConfig(width: "DISTRIBUTE", weight: 2)
              },
              selectionValue: ri!selected_txt,
              selectionSaveInto: ri!selected_txt,
              selectable: true(),
              rows: a!forEach(
                items: local!limitsList,
                expression: a!gridRowLayout(
                  id: fv!item,
                  contents: {
                    a!textField(value: fv!item, readOnly: true()),
                    if(
                      rule!APN_isEmpty(ri!selected_txt),
                      a!textField(readOnly: true()),
                      a!richTextDisplayField(
                        value: a!richTextItem(
                          showWhen: ri!selected_txt = fv!item,
                          text: if(
                            local!showLimitData,
                            "Hide Data",
                            "Show Data"
                          ),
                          link: a!dynamicLink(
                            value: not(local!showLimitData),
                            saveInto: if(
                              local!showLimitData = true(),
                              a!save(local!showLimitData, false()),
                              a!save(local!showLimitData, true())
                            )
                          ),
                          color: if(
                            local!showLimitData,
                            "#ff0000",
                            "#00ff00"
                          )
                        )
                      )
                    )
                  }
                )
              )
            )
          },
          width: "NARROW"
        ),
        a!columnLayout(
          contents: {
            a!forEach(
              items: ri!selected_txt,
              expression: rule!CR_SC_SF_transactionSelection(
                tranasation_txt: ri!tranasation_txt,
                selectedCheckbox_int: ri!selectedCheckbox_int,
                selected_txt: ri!selected_txt[fv!index]
              )
            )
          },
          showWhen: local!showLimitData
        )
      }
    ),
    a!buttonArrayLayout(
      buttons: {
        a!buttonWidget(
          label: cons!APN_TXT_SAVE_DRAFT,
          value: cons!CR_SUSTAINABLE_FINANCE_SAVE_BUTTON_VALUES[2],
          saveInto: {
            a!save(
              ri!buttonAction_txt,
              cons!CR_SUSTAINABLE_FINANCE_SAVE_BUTTON_VALUES[2]
            )
          },
          submit: true(),
          style: "NORMAL",
          validate: true()
        )
      },
      align: "END"
    )
  }
)