I am familiar with declaring global variable in a module from Excel. But when I try to do the same thing in Outlook they lose their value.

This is in a module:
Public EndLINXDate As Date


This is the code for my form:
Private Sub UserForm_Initialize()
LINXDateBox.Value = Format(GV.EndLINXDate, "mm/dd/yyyy")
End Sub

Private Sub LINXDateOKB_Click()
On Error Resume Next
Err.Clear
GV.EndLINXDate = Format(LINXDateBox.Value, "mm/dd/yyyy")
If Err.Number 0 Then
LINXDateBox.Value = ""
Else
Unload Me
End If
End Sub


I can store a value and see it when I bring the form up again. But if I close and re-open Outlook the variable has lost its value.

How can I fix this?

Erik