Shop back button

[death_stroke]

Hello guys, I am creating shop system like this:

But I have problem with back button, it doesn't work. Here is the source code: Custom Shop - Warcraft 3 Maps - Epic War.com
If you can give me a hand with this, I will be grateful!

 

[Tasyen]

Your condition ((Casting unit) equal Merchant 0000 <gen>) prevents running the trigger actions for all units except the main shop.