>>Dear all
>>i want to know how to change field format ( in detail band ) based on a variable value.
>>for example i want if FldFmt = 1 so my field format be @J 999999.999 and if FldFmt = 2 so @J 999999.9
>>Thanks for your help
>
>Instead of defining the field as numeric, define it as character. In the expression enter something like this:
>
>TransForm(MyData, IIF(FldFmt = 1, '@J 999999.999', IIF(FldFmt = 2, 'asldkfjalsdfj', 'alsdkfjas')

YES, It work.
THANK YOU VERY MUCH