Command button caption problem

[stingran]

hi all

i have a command button with caption = "V".
when i click, i want to toggle between "v" and "X", so here
is what i wrote in the code:

Private Sub cmdFillAgain_Click()
    If gFillAgain = True Then
        cmdFillAgain.Caption = "X"
    Else
        cmdFillAgain.Caption = "V"
    End If
    gFillAgain = Not gFillAgain
End Sub

but in the first time i click the button, the Caption remains "x" even though
the gFillAgain variable is changing as it should.. it looks like only the first time the button is clicked doesnt work, because after that i have no problems...

any idea???
thanks