In Read only grid need to add new column ID

What would the ID field display?  For example would it always show numbers starting from 1 (1, 2, 3 ... N) regardless of what rows of data are being displayed?

ID field should display number based on total number of Rows.

You could just have your grid display a numeric value manually declared to be the "fv!index" value in the "a!forEach()" loop you use to create the grid rows.

Can you please share the code.. I had tried but not getting expected result

well, here's a simple example:

a!localVariables(
  local!array: {"a", "b", "c"},
  
  a!gridLayout(
    headerCells: {
      a!gridLayoutHeaderCell(label: "value"),
      a!gridLayoutHeaderCell(label: "id")
    },
    rows: a!forEach(
      local!array,
      a!gridRowLayout(
        contents: {
          a!textField(
            value: fv!item,
            saveInto: fv!item
          ),
          
          a!richTextDisplayField(
            value: fv!index
          )
        }
      )
    )
  )
)

Which produces the following grid:

Thanks a lot ...I was struggling for this