[Abagail]

You need to use else if statements or use returns. The IsTrailerAttachedToVehicle function also uses vehicle IDs, not vehicle models. Example:

pawn Код:

if(IsTrailerAttachedToVehicle(GetPlayerVehicleID(playerid))
{
     // put code here
}
else SendClientMessage(playerid, -1, "You do not have a trailer attached!");

Or method 2:

pawn Код:

if(IsTrailerAttachedToVehicle(GetPlayerVehicleID(playerid))
{
      // put code here
      return 1;
}

SendClientMessage(playerid, -1, "You do not have a trailer attached.");
return 1;
}