How to make first melee hero free (custom melee map)

Hello all, I'm busy making a modified version of the melee game.

Here's what I have and here's what's going wrong:
I've set up a dialog box which will give person ingame chance to pick a faction then give them basic starter units.

Problem is. Normally, your first hero only costs 5 food. Now for some reason they now cost 425 gold, 100 wood and 5 food like you'd pay for a SECOND hero. My experience with triggers is fairly basic. Anyone have an idea how to fix this?

I've tried to find a topic but I'm left with empty hands...

I have this problem solved.

There is an actual trigger called "Player - Set player Available free Heroes to X", this one does exactly what I wanted.