Have a multipage form

Up front have delared
Option Explicit
Public mya1, mya2

Then
Sub workbook_open()
Worksheets("Answers").Activate
mya1 = Range("e2").Value 'mya1 at this stage is holding value
Mymain.Show 'mymain is multipage form

In mymain first page have group buttons
When select button want mya1 to display
But mya1 is blank

Any clues appreciated