[Cjgogo]

I'm trying to make in my gamemode a script that does so that if you enter a bus(Canny) and speed over 60mph,it shows you a dialog that on your car has been planted a bomb,and if you slow down below 50mph it blows up.I have the PAWn script with no errors,but in-game it's not working,please HELP me fast(as you didn't asnwers the other topics at least answer this one :P):

pawn Код:

#define DIALOG_INFERNALRACE 5
#include <a_samp>

public OnPlayerEnterVehicle(playerid,vehicleid, ispassenger)
{
    new Float:x, Float:y, Float:z;
    GetVehicleModel(vehicleid);
    if(vehicleid == 431)
    {
       GetVehicleVelocity(vehicleid,x,y,z);
       if(GetVehicleVelocity(vehicleid,x,y,z) == x*1.5,y*1.5,z*1.5)
       {
          ShowPlayerDialog(playerid,5,DIALOG_STYLE_MSGBOX,"Infernal Race","A bomb has been planted on your bus,\nand if you slow down below 50mph,\nyou will be blowed up","Accept","Accept");
       }
    }
    return 1;
}

public OnDialogResponse(playerid, dialogid, response, listitem, inputtext[])
{
        if(dialogid==5)
    {
        if(response==1)
        {
           new vehicleid=GetPlayerVehicleID(playerid);
           new Float:x, Float:y, Float:z;
           GetVehicleVelocity(GetPlayerVehicleID(playerid),x,y,z);
           if(GetVehicleVelocity(vehicleid,x,y,z) == x*1.5,y*1.5,z*1.5)
           {
              SendClientMessage(playerid,RED,"A bomb has been planted on your bus,DON'T SLOW DOWN BELOW 50mph OR YOU'LL be blwoed up");
           }
           if(GetVehicleVelocity(vehicleid,x,y,z) < x*0.5,y*0.5,z*0.5)
           {
              SetVehicleHealth(vehicleid,0);
              SendClientMessage(playerid,RED,"BYE BYE,mission acomplished,bus blowed up");
           }
         }
         if(response==1)
         {
            new vehicleid=GetPlayerVehicleID(playerid);
            new Float:x, Float:y, Float:z;
            GetVehicleVelocity(GetPlayerVehicleID(playerid),x,y,z);
            if(GetVehicleVelocity(vehicleid,x,y,z) == x*1.5,y*1.5,z*1.5)
            {
               SendClientMessage(playerid,RED,"A bomb has been planted on your bus,DON'T SLOW DOWN BELOW 50mph OR YOU'LL be blwoed up");
            }
            if(GetVehicleVelocity(vehicleid,x,y,z) < x*0.5,y*0.5,z*0.5)
            {
               SetVehicleHealth(vehicleid,0);
               SendClientMessage(playerid,RED,"BYE BYE,mission acomplished,bus blowed up");
            }
         }
    }

(other dialogs following that's why no return)

So no errors when compiling,but it's not working,what' s wrong?
HELP!!!