Problem about adding Item by Trigger

[TERRYperfect]

1.

I add ITEM to the SHOP by Trigger?
BUT WHEN THE UNIT BUYS that item from the shop..
the item instantly disappears from the shop........


how to solve the problem??


======================================================

2

In fact ,I want to do one system, too.

there's 2 items in the shop.
A(cd 100s),B(cd 10s)

If A was sold out, the A and B both get into A's Cooldown (100s)...
If B was sold out, the A and B both get into B's Cooldown (10s)...

 

[Lifee]

For 1. I know how to fix this easy problem.But Before that show me the trigger.