In case anyone else encountered this problem. You have to edit your function and check the "has return value" box. Then your return will work. After this you have to use "Call Function" again and now you have a new field for saving results.
@Nicolas Thank you for your reply brother. but I still cant load the data from my 5000 profiles. it looks like BAS only loads the fingerprint that are in the profiles but it doesnt load the login tokens saved in the profile cookies. It's very frustrating that I cannot use my profiles. I hope someone can help me :(