>In VFP 5, I can put in the control source of a column in
>a grid with 'thisform.xclass.xfunction(x,y,z)'
>and this works well,but in VFP 6, it gives me error :
> Error loading file,control source: unknown member
>
>Any idea from Anyone??

By using the DynamicCurrentControl, you will have to make sure that there is a control in the column that corresponds to the object name returned by your xFunction(x,y,z). If the object doesn't exist you will have an error. Also, if the function fails to properly identify a valid control and returns a .f., .t. or blank it too will give you an error.