Stop skill buying (TGS style)

Well I've constructed some heroes, similar to the adored game TGS. They're built up like so:

5 standard moves: Attack, Move, Stop, Patrol, Hold Guard.
1 start-skill (non upgradeable): Dependant on character.
6 additional skills you can buy (like in TGS).

Now here's my problem. How do I make that boarder, so that ONLY 6 different skills can be bought.

Create an integer variable array (with array numbers for players) with starting value 6
Set it so everytime an ability is bought it goes down by 1
And then that if it is equal to 0 users can't buy skills

If you don't know how to trigger this tell me and I'll post a GUI code

As an aside, in the future, you'd do well not to use maps as the description of what you want, as many of us wont know you're referring to.

Okay, thank you guys. I don't know how to trigger this, so I'll write to BadFurDays ^_^ If anyone else wants to know, then contact me.

First, create an integer array called "skills", with an array as long as there are players, and its initial value to 7

Now do this trigger:

Events: An item is buyed

Conditions: Item type of item equal to (one ability item) OR Item type of item equal to (another ability item) OR..... etc.

Actions: Set skills[player number of owner of (i don't know if there is a "buying unit") triggering unit] equal to skills[player number of owner of triggering unit] - 1
IF skills[player number of owner of triggering unit] is superior to 0, THEN do nothing, ELSE (use the AND action for this) set gold of (owner of triggering unit) equal to gold of (owner of triggering unit) - price of (last bought item) AND remove (last created item) from the game

I found out of that myself. But the problem is to separate the items. One thing is to buy the abilities (level 1) another is to level them (level 2-10). You see the problem? If I take one "skill" away each time they buy an ability, then they'll only be able to have 6 ability points, for instance Evasion - Level 6, or Evasion - Level 3 and Trueshot Aura - Level 3, or Evasion - Level 1 and Trueshot Aura - Level 5, etc.
I want them to be able to buy 6 different skills and level them as much as they want (lvl 10 is max though, but I got that covered )


And do I have to make a Variable for each player or does it figure that out on its own?

Just control the buying of level 1 abilities, and put a "requirement" to buy later level abilities in the object editor

Also what do you mean "make a variable for each player"? Just do an array of variables (if you don't know, when making a new variable, check the "array" box)

I think I got it now. Thank you. I'll PM you or write here if any problems occur here. But I can't test my map atm cuz my war3 needs to be reinstalled and I can't find my TFT CD.