How can I comment out part of a BP?

Just disconnect the Exec pin to the section you don’t want to execute.
When you want to enable it again just re-connect.

Is there a way to comment out part of the bp just like the “//” in c++ instead of deleting them? because i don’t want it to work now,but maybe i want it to work in the future

it really is that simple just disconnect the nodes you don’t want to fire you don’t have to delete them

Additionally you could group those nodes in comment block (‘C’ key after selecting nodes) and move the whole group somewhere away.

Oh thats really simple! Thank you all!

cool thanks that was helpfull

Great solution.
Here is the answer about the way you can disconnect the pin.