Fireballs changing direction with player

[SuperSlim]

The player creates a fireball and it moves away from the player but when the player changes direction the fireball changes direction with him. How do I fix this? I am using the physics system.

this is the fireball creation code

if (gamepad_button_check_pressed(0, gp_face3) && attacked == false){
        switch (dir){
        case 0:
        instance_create(x+32, y, obj_fireball);
        break;
       
        case 1:
        instance_create(x+32, y-32, obj_fireball);
        break;
       
        case 2:
        instance_create(x, y-32, obj_fireball);
        break;
       
        case 3:
        instance_create(x-32, y-32, obj_fireball);
        break;
       
        case 4:
        instance_create(x-32, y, obj_fireball);
        break;
       
        case 5:
        instance_create(x-32, y+40, obj_fireball);
        break;
       
        case 6:
        instance_create(x, y+40, obj_fireball);
        break;
       
        case 7:
        instance_create(x+32, y+40, obj_fireball);
        break;
        }
        obj_fireball.dir = dir;
        attacked = true;
        alarm [1] = room_speed/8;
    }

and this is in the step event of the fireball

// move in the direction
var xforce = lengthdir_x(10, obj_player.dir*45);
var yforce = lengthdir_y(10, obj_player.dir*45);
   
with(other){
    physics_apply_impulse(x, y, xforce, yforce);
}

 

[Daz@mbi]

Try setting the direction of the fireball in the fireballs create event.