Ah I got another idea for ya,
why not use vec_dist + mouse_left:
add:
player = me;
in your player's action (at the very top of it)
Code:

---

var counter = 0;

action ball_path
{
  while(!player) { wait(1); } //wait until the player is created
  my.skill2 = 0;
  while(!my.skill2)
  {
    if((vec_dist(my.x,player.x) < 50) && mouse_left == 1)
    { my.skill2 = 1; )
    wait(1);
  }
  
  counter = 0; //number of waypoints
  	temp.pan = 360; 
	temp.tilt = 180;
	temp.z = 1000;
	result = scan_path (my.x, temp);
	
	if (result == 0) 
	{
		 return; 
	} 
		
	ent_waypoint(my._TARGET_X,1); 
	
        //loop for ball to travel path
	while (counter<24)
	{
		temp.x = my._TARGET_X - my.x; 
		temp.y = 0;
		temp.z = my._TARGET_Z - my.z;
		result = vec_to_angle(my_angle,temp);

		if (result < 23) 
		{  
			ent_nextpoint (my._TARGET_X); 
			counter+=1;
		}
                //move ball model along path
		c_move(my, vector(temp.x,0,temp.z), nullvector,ignore_passable);	 
		
		wait(2);
	}
	score_basket();
}

---