Function for Trading Resources

I am wondering if their is any easy function or trading resources? If there is not I can make one. But I was hoping for an easier thing.

I don't believe there is. You just have to make it remove x gold from player a and add x gold to player b.

That's all I needed to know. I had checked both the Blizzard and common.j and had not found anything. I was just wondering if someone else had found it. Working on such a Function now. Thanks