hey guys i m playing at night with my friends in my PK DeathMatch Server a player come a crashes my server i restart my server again he come and crash my server this happened 5 times to me what should i do now??

hey guys i am making a cmd !stopcar and !startcar see this what i did wrong in it

 else if ( strcmp( cmd, "!stopcar", true ) == 0 )
   {
         tmp = strtok(cmdtext, idx);
      if(PlayerInfo[playerid][Logged] != 1) SendClientMessage(playerid, COLOR_RED, "You need to login first!");
      else if ( !IsAuthorized( playerid, cmd ) ) SendClientMessage( playerid, COLOR_RED, "You don't have access to use this command!" );
  else if(!strlen(tmp)) SendClientMessage(playerid,COLOR_GREEN, "USAGE: !stopcar [VehicleID]");
      else if(IsVehicleOwnedShared(strval(tmp),gPlayers[playerid]) == -1) SendClientMessage(playerid,COLOR_GREEN, "You do not have the keys for Stop that vehicle.");
      else {
      new vehicle = strval( tmp )
         SendClientMessage( playerid, RED, "You stopped Car" );
         GetVehicleStop( vehicleid );
      }
      return 1;
   }
    else if ( strcmp( cmd, "!startcar", true ) == 0 )
   {
         tmp = strtok(cmdtext, idx);
      if(PlayerInfo[playerid][Logged] != 1) SendClientMessage(playerid, COLOR_RED, "You need to login first!");
      else if ( !IsAuthorized( playerid, cmd ) ) SendClientMessage( playerid, COLOR_RED, "You don't have access to use this command!" );
  else if(!strlen(tmp)) SendClientMessage(playerid,COLOR_GREEN, "USAGE: !startcar [VehicleID]");
      else if(IsVehicleOwnedShared(strval(tmp),gPlayers[playerid]) == -1) SendClientMessage(playerid,COLOR_GREEN, "You do not have the keys for start that vehicle.");
      else {
      new vehicle = strval( tmp )
         SendClientMessage( playerid, RED, "You started Car" );
         SetVehicleStart( vehicleid );
      }
      return 1;
   }

hy guys i am scriping on GUPS i want to a cmd !stunt1,2,3, so on so i do this

    else if ( strcmp( cmd, "!stunt", true ) == 0 )
   {
      SetPlayerPos(playerid,-987.98461,265.30059,8.81042);
      SetPlayerVehicle(playerid, 156 );
      format(szMsg, 128, "%s gone to do a stunt.",gPlayers[playerid]);
       SendClientMessageToAll( BLUE, szMsg );
      return 1;
   }

what i did wrong??it saying undefined symbol "SetPlayerVehicle"
tell me the solution that when i type !stunt the player come to the saved position with car or bike

hey guys how are u??Guys i need the cmd of !getcar , !heal , !wep and !gotoloc for gups
in !getcar cmd :when i getcar one time it come but second time it will not come
in !heal cmd: when i type heal they say me "you have to be hospital"i cant heal in another place plzz help
in !wep cmd: they say me type !wep [weponsname] [ammo] is dont want to type ammo i want to type !wep bla bla
in !gotoloc cmd:they say me type /c gotoloc [name] i want to write !gotoloc and if my level isnt big they say me you dont have to use this cmd plzzzzzzzzzzzzzzzz helllllllllppppppppppppppppp

hey guys i am scripting on GUPS i need the cmd of gotoloc i want to write !gotoloc not /c gotoloc plzz give me and tell me the cmd for !brb !back !lol when i write brb my player pause and when i write !back my player unpause for lol laughing out loud plzzzzzzzzz

hey guyz i installed gups scripts v 1.16 when i change someting in it and compile my AMX file gone i dont know but it hide what should i do??And he say "cannot read from a vcmp file" how i can solve this problem