Reset checkbox on Ribbon back to unchecked

[jeffreybrown]

I have a checkbox id in the RibbonX which when the user presses will run a macro; however, certain sheets do not require this macro.

When the user checks the checkbox they recieve a Msgbox telling them this will not run on the activesheet if it should be excluded.

How can the checkbox be reset back to non-checked before Exit Sub?

Sub ManageFormat(control As IRibbonControl, pressed As Boolean)
    Dim ws As Worksheet
    Set ws = ActiveSheet
    If ws.Name = "Sheet1" Then MsgBox "Wrong Sheet"
    Exit Sub
        
    If pressed Then
        'Do Something
    Else
        'Do Something Else
    End If
End Sub