Accessing Excel in Different Forms with ListBox

[Stan]

I need some advice on loading Excel values into a Listbox in a form (Form2) different than the main form (Form1).

In Form 1 I have the following

Public xlApp As Excel.Application
Public xlBook As Excel.Workbook
Public xlSheetData As Excel.Worksheet

Private Sub Form_Load()

    Set xlApp = New Excel.Application
    Set xlBook = xlApp.Workbooks.Open(App.Path & "\myFile.xls")
    Set xlSheetData = xlBook.Worksheets("input")

End Sub

I then access Form2 using:

Private Sub mnuData_Click()

    Form2.Show vbModeless, Me

End Sub

On Form2 I have a Listbox that I want to populate with values from the worksheet "input" when this form loads. I tried"

    Dim xlApp As Excel.Application
    Dim xlBook As Excel.Workbook
    Dim xlSheetData As Excel.Worksheet
    
   Set xlSheetData = xlBook.Worksheets("input")
    List1.DataSource = xlSheetData.Cells("D26..D50").Value
end sub

but VB doesn't like my use of DataSource . Any suggestions?