Need Single Bone->Set Physics Blend Weight

Did I miss a node to set the Physics Blend Weight for a single bone or is there none?

I now really need to be able to set the weight value in blueprints for a single bone at a time as I am frequently setting the weight on ovelapping sets of bones at ‘random’ times.
I first tried to isolate the single bones by taking the bone index, adding one and setting those to zero just after I set the value of the bone I was interested in.
But now since each bones value tails off over time this second value can be anything.

I really don’t want to start doing c++ to get this function so do anyone know if I missed a trick?

Alternatively is there a somewhat similar example source code to make my own node with this functionality?