Have an option of easier editing of formula's

I have a big mindmap with formula's on topic but also on subtopic level.

All the subtopics have the same formula to calculate.

I noticed, that I made an error in the subtopics formula.

I had to change the formula in all the subtopics manually.

Wish to have an option to edit multiple (identical formulas at once) or otherwise have an option to copy and/or replace an updated formula to all other subtopics.

Also an option to edit all or delete all formula's would be a nice addition.