[Q] Is it posible to change upload form parameters for image

Hello All!

I use "Insert/Edit Image" dialog and "upload" tab for uploading image to server. But, i get a problem: my upload URL on server is looks like: "http://server/app/index.pl?realm=upload.image". So, i can change upload URL in fckconfig.js. but client send for upload POST-request, and my parameter "realm" is not present in that request (but i need it).
So, my question: Is it posible to change upload form parameters for images in config? (but not only for images).

I will thanks for any answer.

PS: if i am adding <input type="hidden" name="realm"> in fckeditor/editor/dialog/fck_image/fck_image.html to form with id="frmUpload" - it works as i need, but it's not a way...