[billiout]

Code:

//on the top of your script
new command[MAX_PLAYERS];

//on OnPlayerCommandText
if (!strcmp("/repair", cmdtext))
    {

        {
        if(command[playerid] == 0)
        {
        RepairVehicle(GetPlayerVehicleID(playerid));
        SendClientMessage(playerid, 0xFFFFFFFF, "You repaired your vehicle");
        command[playerid] = 1;
        }
        if(command[playerid] == 1)
		{
		SendClientMessage(playerid,0xF5260FFF,"You already uses this command in this round");
		}
        }