How to use corrective bones in animations?

[SupportiveEntity]

Hey there @CrimsonHelm! Welcome to the community! I believe you would use the corrective roots as morph targets as referenced by ER in this post:

How to set bone driven controllers for corrective morph targets

I have modeled some morph targets to correct the deformation of the pelvis of a character. In the AnimBP I am trying to set up a bone driven controller so that if the leg rotates in a certain axis up to the 90 degrees it will set the value of that morph target, mapped from 0 to 0 degrees and 1 to 90 degrees. The problem is that I don’t understand how to set the parameters correctly for this node and can’t find any sources on how to properly achieve this. Could I get some help with this?