Duble command

Hi
I wonder why I have to type command twice to tp to derby ??
Please Help! =)

Code:

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CMD:derby(playerid,params[])
{
for(new x; x < 6; x++)
{
SetPlayerVirtualWorld(playerid,23);
if(DerbyVehicle[x][occupied]) continue;
PutPlayerInVehicle(playerid, DerbyVehicle[x][id], 0);
DerbyVehicle[x][occupied] = true;
break;
}
return 1;
}

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