[JaydenJason]

Код:

CMD:fillcars(playerid,params[])
{
	if( PlayerInfo[playerid][pAdmin] < 2 || PlayerInfo[playerid][pMod] < 2 || PlayerInfo[playerid][pDono] < 2)
	return SendClientMessage(playerid,red,"| ERROR | You don't have permission!");
	new quantity, stringgas[130];
	if(sscanf(params, "i", quantity)) return SendClientMessage(playerid, red, "Use: /fillcars [quantity]");
	if(quantity< 0 || quantity> 100) return SendClientMessage(playerid, red, "| ERROR | The maximum amount of gas is 100!");
	format(stringgas, sizeof(stringgas), "AdmCmd: You supplied % d liter on all cars of San Andreas", quantity);
	SendClientMessage(playerid, blue, stringgas);
	for ( new c = 1 ; c < MAX_VEHICLES ; c ++)
	{
		carfuel[c] += quantity;
	}
	return 1;
}

Fixed the if(PlayerInfo.. etc, your code makes players that are not admin able to use this command as well