If you need i can upload the form
Try this and let me know if it works for you.
Off a button add this:
xfa.host.messageBox("Please save file in a new name. \n\n more text..........add what you want."
, "THANK YOU", 1,1);
can i add it to the saveas button already ?
Yes, I didn't know if you had one already or not. I would just add the xfa.host.messageBox code to the Save As button. I would add it first so it prompts the user to save the file in another name, then brings up the Save As dialog box.
We will see if that gets the problem solved