Updating cell text after edUnitEditBtn valu change

Hi.

 
I use edUnitEditBtn. If the user enters "5" for a value and  "lbs" for the units and accepts the value (i.e. presses enter) then the following string will be displayed:
 
5lbs
 
I'd like to display:
 
5 [lbs].
 
Which event should I override to change the presentation of this string?
 
Thanks

I received a response from email support.

Answer: Use OnCellValidate.
 
Thanks