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Custom Arm IK Extension & FK/IK Blend in armUI

Hello!

I have a custom arm rig that consists of a standard arm module along with some additional controllers. To extend the IK setup, I modified it so that the wrist is no longer the last child. Instead, the IK controller I added is. However, this seems to cause issues when triggering the FK/IK Blend switch.

To address this, I wrote a small script that ensures my IK extension is recognized and toggled correctly when switching to FK.

My questions are:

  • Is there a way to modify the armUI FK/IK Blend attribute to include my extended IK setup, so the module recognizes it as part of the same system?

  • Alternatively, can I access and customize the module’s script directly to integrate my changes more seamlessly?

Thank you in advance!