Do i have to create UV's?


I was playing around with substance designer yesterday and i think i got the hang of that now.
I took my substance source and imported it to UE4. And then i applied it to a primitive mesh, cube cone sphere. And it worked fine!

Does this mean that i dont have to create UV’s for example my Houdini digital assets in Unreal?
Yes, i am abit confused
Or am i suppose to make UV’s in my HDA before i save it as an hda? hmm…

Perhaps someone knows what i want to do :slight_smile: