incorrect bullet directions

hi all,
how to make the bullet goes to the right direction same with the mouse pointer? i make an empty which shooting bullets but the bullet always goes to one point. how could it happen? thanks…

press the ‘L’ button for Local, instead of global directions?

edit: depends on how you have set it up, uploading a blend would be nice

ya that’s work, I missed previous tutorial about it.
But some time the bullet still goes to wrong direction…how can i fix it?