This isn't allowed for various reasons. According to the
Official Site Rules and Policies and
Trading Rules...
Assuming you're talking about offering forum gold (because real money trade is not allowed on this subforum);
Quote
Do not offer fg/items you don't have.
More specifically, according to the
rules at the top of this sub forum...
Quote
Absolutely NO linking to outside projects or exe files! If you have a question, ask it, and paste the source code as applicable. Otherwise, go elsewhere for assistance.
as this suggests contributing to another website.
You're more than welcome to ask for assistance in advice but that's as far as it goes here.