How to attach Pacakge for Local made SAP Script

Hi,

I have created a SAP Script, initially I have made it as local without assigning any package, ow I want to attach one package for that SAP Script form to transfer it to quality and production but in chnage mode the package filed is disable.

Also other option is there to copy existing form to new and give the package name but i want to know insted of copy how to add package for existing form.

regards,

zafar