So how is it not working?
Step through each part and confirm you are getting the results you expected, if you are - then explain why it’s not working, if you are not - what parts specifically are not working? Can you test with just that part and see if you can find the issue?
If you know how you want your BP flow to work, step through each part of your idea and confirm it works as you go, putting together an entire idea and then trying to figure out why it doesn’t work is rarely easy to do.