>>Hi,
>>
>>>i want to know how to change field format ( in detail band ) based on a variable value.
>>
>>If you have only few values, you can put several text boxes on top of each other and use the Print When condition to print only one of them. Each text box would have a different format setting.
>
>i have 4 values, but can i do this in another way.

As far as I know you can do it other way only in VFP9.

I guess I should have read the original question and not Christof's response <g> I was thinking about different formatting, like bold, colors, etc.