3ds Max: Substitute isnt compatible with Dummmies?

From time to time I have to import the skeletons from other applications to Max. The problem is they look very ugly on import Screenshot - ffa7687b7a27d101f895cb9e51e2b142 - Gyazo and I am looking for the way to easily change their visual representation. The substitute modifier looked like exactly the answer, but for some reason it doesnt appear in modifier list for dummies. Is it supposed to be that way? Or maybe it was fixed in new versions? (mine is 8)

I kinda solved it in another way (exporting to FBX from max then re-importing seems to generate valid bones). Still it is a major oversight from Autodesk if Substitute indeed doesnt work with dummies