[Gappy]

You could do this

pawn Код:

public OnPlayerEnterVehicle(playerid, vehicleid, ispassenger)
{
  new Float:px, Float:py, Float:pz;
  if(GetVehicleModel(vehicleid) == 520)
  {
    GetPlayerPos(playerid, px, py, pz);
    SetPlayerPos(playerid, px, py, pz+3);
    SendClientMessage(playerid, 0xFFFFFFFF, "Sorry but flying a hydra is currently unavalible!");
  }
  return 1;
}