Is the image static or is it created on demand by the server?
The image is already in the server. I just want to insert it's to the form but in form i don't have a image filed.
I succeed to insert image's url to text filed.
There are a few methods but all involve creating an FDF or XFDF file on your server. You can either create a button field on your form and use the FDF to set the button face or you could use the image as the content of a stamp annotation and add that to the FDF. In either case, your document would call a server script that imports the FDF file.