[ViruZZzZ_ChiLLL]

pawn Код:

public OnPlayerCommandText(playerid, cmdtext[])
{
 if (!strcmp("/repair", cmdtext))
 {
  if(!IsPlayerInAnyVehicle(playerid)) return SendClientMessage(playerid, 0xFFFFFFFF, "You are not in a vehicle!");
  RepairVehicle(GetPlayerVehicleID(playerid));
  SendClientMessage(playerid, 0xFFFFFFFF, "Your vehicle has been successfully repaired!");
  return 1;
  }
return 0;
}

Always return a 0 on OnPlayerCommandText

EDIT : Sorry, didn't know it was quick reply D: