Trading Resources

[Setreal]

I recently decided to come back to map making and can't seem to remember how resource trading among non-allies for the life of me. I searched around and am aware that you use [Player #] types a chat string for commands and such but don't recall how you pull apart the string. I.E. Player 1 wants to give unallied Player 2 50 gold and types -tradegold 2 50 or some such. I'm almost positive there's someway to pull apart the message so that you know he wants to give 50 gold to player 2. Thanks in advance.