Export Access MSFlexgrid to Excel

I have an MSFlexgrid on a form in an Access XP database. I would like to export the data in the grid to Excel. I know how to do this in VB, but I am not sure if the same code can be used in Access. When I try it, it gives me run-time error 381 - Subscript out of range

VB Code:

Private Sub cmdExport_Click()
    On Error Resume Next
    Dim xLApp As Excel.Application
    Dim xLWB As Excel.Workbook
    Dim xLSH As Excel.Worksheet
    Dim RowCounter As Integer
    Dim ColCounter As Integer
    
     'open Excel application
    Set xLApp = CreateObject("Excel.application")
    'Create Excel workbook
    xLApp.Workbooks.Add
    Set xLWB = xLApp.Workbooks(1)
 
    'Using Sheet 1
    Set xLSH = xLWB.Worksheets(1)
    For RowCounter = 0 To 44
        For ColCounter = 0 To 1
        With grdPlans
             xLSH.Cells((StartRow + RowCounter) - 1, (StartCol + ColCounter) - 1).Value = _
            .TextMatrix(RowCounter - 1, ColCounter - 1) & " "
        End With
        Next
    Next
    
    xLWB.SaveAs (App.Path & "\Plan.xls")
    
    xLWB.Close
    xLApp.Quit
    
    Set xLWB = Nothing
    Set xLApp = Nothing
End Sub

Is there a way to do this?