>Michel, thanks a lot for the explanation, now i have a clear idea of how it works, as you said, i don't like the GET method neither, so i will use the first thing you said, i will load the page with the control hidden, then load the form's values there ,submit the form and show the control.

Yes, this is a cool idea. I always do that for such purpose. That will make is easier to automate that from VFP as it's easier to get a reference to a form object than a javascript variable. So, within a few lines in VFP, you'll obtain what you want. With the javascript approach, in order to get the hook in VFP, this would have required additional manipulation.