Like the title states, I can't figure out how you get the handles to show up in unreal.

I'm still newish to houdini and decided I'd try my hand at making an hda for the first time. I'm working on a procedural sunflower where if you move a sphere the flower bends and point torwards that sphere. This all works in houdini, and I have 90% of the hda done but this sphere part is where I'm stuck at in unreal.

To simplify it, I made another tester hda where its just a sphere connected to a transform node. Exported the transform handle to digital asset and made sure it was set to transformer(xform) in interactive/handles setting. brought it to unreal and still doesn't work. None of the values change, and hitting "t" doesn't do anything.

Did I miss a setting along the way or is this by any chance a common bug that y'all have delt with?
Sorry for the long post and thanks in advance to anyone that stops by to help!