Hi, i have problem with subtraction in this line: carrier.pers["money"]-20; when i put instead -20 only -- it works, but i dont want to subtract only 1 but i want 20. Pls can you someone help me with it? (i have defined "money") here is whole script:

main()
{
init_TNT();
thread TNTAmmo();
}


init_TNT(){
	players = getentarray("player", "classname");
	for(i=0; i<players.size; i++){
		players[i].pers["tntammo"] = 0;
	}
}

TNTAmmo(){
	TNT_ammo_trig = getent("buy_tnt", "targetname");
	while(1){
		TNT_ammo_trig waittill("trigger", carrier);
		give = 1 - carrier.pers["tntammo"];


		if(carrier.pers["money"]<7)
			{
			carrier iprintln("^2NOTICE: ^7You don't have enough money.");
			}
		else{
			carrier.pers["money"]-20;
			carrier iprintln("^2NOTICE: ^7Your money is now: ^2"+carrier.pers["money"]+".");


			carrier.pers["tntammo"] ++;
			carrier iprintln("^2NOTICE: ^7Count of your TNT: ^2"+carrier.pers["tntammo"]+"^7.");
		}
		wait 1;
	}
}

instead of

carrier.pers["money"]-20;

you should use:

carrier.pers["money"] = carrier.pers["money"] - 20;

works, thx.... i could get this idea :D

or

carrier.pers["money"] -= 20;