Delete AllowEditeRanges by VBA

Dear All,

Can some-body help me to correct the following code:

Private Sub CommandButton1_Click()
Dim WS As Worksheet
Dim aer As AllowEditRange

For Each WS In Worksheets
For Each aer In ActiveSheet.Protection.AllowEditRanges
aer.Delete

Next aer
Next WS

End Sub

This Code I do it to remove all AllowEditeRanges in every sheet, but unfortunately it works only in the sheet that the command button exists and NOT for every sheet.

So can anyone help me and thanks in advance.