if (place_meeting(x, y, obj_mouseKiller))
{
    visible = false;
    con = 1;
    if (x < 260)
        fall = instance_create(x + 38, y + 8, obj_holemouse_descend);
    else
        fall = instance_create(x + 2, y + 10, obj_holemouse_descend);
    fall.target = target;
    instance_destroy();
}