what the .. there are no options such as the ones you have in c4d :\
- c4d plugin devs are two levels ahead of 3ds max ones - this is disappointing - also you cannot use 3ds max procedural or any texture - just the octane ones ..
- seems like c4d plugin developers got pretty creative with the developing - and that I like -
this is how you connect a random to a gradient - your's looks like you used the 3d max gradient node which will not work