Loop Statement : Use of string to refer userform object

Greetings,

In my userform I have several frames (Frames 2-6) that are enabled as per the optionbutton selection (enclosed in Frame1). By default the frames (2-6) are disabled. I tried to write a code where if the optionbutton selection changes any frames that have been previously enabled should be disabled before enabling the frame for the current optionbutton selection.

I approached the problem by first identifying the name of the enabled frame using the below procedure.

Private Sub NameEnabledFrame()
    CountFrames
    For i = 2 To iCountFra
        Set Fr = Me.Controls("Frame" & i)
            If Fr.Enabled = True Then
                sFraName = Fr.Name
            End If
        'Disable all frames to clear memory
        Fr.Enabled = False
    Next
    MsgBox (sFraName)
End Sub

The correct frame name is returned irrespective of the order in which I click the optionbuttons. However when I add the line

Me.Controls(sFraName).Enabled = True

after the msgbox statement, the correct frame name is returned & hence the enabling takes place only if I click the optionbuttons in ascending order, ie, 1, 2, 5 etc. If I click optionbutton2 after clicking 5, the message box returns frame6 (corresponding to optionbutton5) with frame6 enabled. Frame3 (corresponding to optionbutton2) does not get enabled.

Why is this happening? Please help.
Asha

N.B. Frame1 also has a combobox and textbox whose values will not change with a change in optionbutton selection.