BU fold filter

[Szityek]

Hello!

I want to create a filter for BvB(both for sb and bb) in a 3handed game and i'm stuck. The problem is i couldn't create a filter for a situation when BU folds and we are in sb or bb. I could create filters f.e: When i am sb and bu folded or when i am BB and bu folded but not for these to type of situations together. Is there a way to create this or i have to filter for the 2 situations seperately?
Feel free to contact me if the sitrep is not accurate enough.

Thank you in advance.

[morny]

Can you share the formula you currently have?