So in my testing scene everything just worked fine, but when I tried to apply it to my existing scene with all the muscles in it, it does not excite the muscles at all, no matter how high I raise the pos sensitivity attribute. I tried it on multiple muscles, deleted the tissues, did mesh analysis and assigned new tissues and fibers, but still the muscles don't get excited by their respective zLineOfAction, even though, again, the excitation attribute just works as expected.
I dont really see what is the difference between my testing scene and the one I am working on. Also the issue with the zLineOfAction not appearing in the output/input section still persists when first assigned, after a restart it always appears again.