Okay so im following this tutorial: ?v=2YQH_ADNkXE&list=PLZlv_N0_O1gZS5HylO_368myr-Kg2ZLwb&index=18
Around 5:10 he link the “As My character C” to “IsPunching?” from the character event graph. I have mine set to public but can not find it in my animation blueprint
Go into your character bp - select the bool variable - in the details panel you have to set it to “editable” - go back into the animbp - drag out the blue point from the cast node - search for it 
It is set to editable, still can not find it
Are you sure that you cast to the right blueprint? + that you have done it like that:
- click and hold the blue point + drag it out

- search for your variable -> mostly at the bottom of the window
- add it
It has taken me all these hours to realize a had a spelling error…disregard my help. i got it, might need some sleep…