>>>It looks like SetFormat is reserved word. You shoul come up with another name for the method.
>>
>>I solved the problem using SetFormat_() , no big deal. but I just want to add this info :
>>
>>Other than that SetFormat is reserved word (which is true) but it seem that is not the only reason
>>
>>If I used a procedure name ClearData() or or Setfocus() the parameter displayed by the intellisense is wrong.
>>
>>While if I used Setup() or SetVar() which are also reserved word, the parameter displayed by the intellisense is correct.
>>
>>There is something else effecting on the intellisense.
>
>SetFormat is a VFP9 function, check with the updated help at http://vfpx.codeplex.com/wikipage?title=VFP%209%20SP2%20Help%20File&referringTitle=Home

Thank you for the link for new updated help file.

Even in the updated help they mention it as (Method, Reserved word), not as Function, If by function you mean like LEN(), well, SetFormat() return nothing and cannot be used.