trouble with control collection

[Mordy]

why won't this work:

dim coll as collection
dim og as OptionButton
dim cb as ComboBox
dim TB as TextBox
 
for each og in me.controls
coll.add og
next
 
for each.... ' same with textboxes and comboboxes
 
but it gives me an error.
 
even this won't work:
 
for each cb in me.controls
....
ctr.enabled=false
next cb