[Gangster-rocks]

You can use this

pawn Код:

public OnPlayerKeyStateChange(playerid, newkeys, oldkeys)
{
    if(IsPlayerInRangeOfPoint(playerid,4.0,0,0,0))// Add here the checkpoint x,y,z cords
    {
        if(newkeys == KEY_WALK)//Thats for the left alt
        {
            //add Rob code here
        }
    }
    return 1;
}