Hey, Christan's solution Works !!!

"What" Works, i realy can't explain, but.. WORKS !!!

The code :

x=100
activex = Createobject("ActivexName")
Interface = Getinterface(activex,"Method")
Interface.Method(@x)

? x && Was changed correctly


Note that i don't need to convert anything .

It's Funny. The error not occurs frequently with ActiveX.
it would be more information about the getinterface() function on the vfp's documentacion, don't you think ?


Thank's to ALL.

ps : The component i was working on : polyimage image Control Library. It's a great imagem control, and it's veary cheap.
www.Polybites.com