condition problem

I'm making a equip system. My problem is that a condition isn't working right.

Here is the condition:

Item_Main[(Player number of (Owner of (Hero manipulating item)))] Equal to No item

Here is the action that sets the variable Item_Main

Set Item_Main[(Player number of (Owner of (Hero manipulating item)))] = (Item being manipulated)

It is thinking that Item_Main for the owner of hero manipulating item is equal to no item

How do I fix this?

when the 'Hero Gains An Item' (or whatever its called) event occurs
the hero hasnt got the item yet. the item is actually placed a milli second later (or faster), its not instantly though.

This is for when the hero uses an item not when a hero gains an item.

I found the problem is in the set variable action for Item_Main

I tried setting it to

Set Item_Main[(Player number of (Owner of (Hero manipulating item)))] = (Item carried by (Hero manipulating item) of type Onion Sword)

but that didn't work and neither does

Set Item_Main[(Player number of (Owner of (Hero manipulating item)))] = (Item being manipulated)

Please help me.