Need help for max type of item a unit can carry please

[HIGH_WAR_LORD]

What I want to do is to allow only 1 type of item(list of items are the one in Gladiator_Items(1),etc) I dont quite understand what does the For each integer A/For each integer B/For each integer Variable do...

 

[Devalut]

I recall @ThisPOT made an item system, it has specifics on denying the acquisition of more than one item type (one handed / two handed/ bows /staffs / etc)