Polysurface filet

Hello again,

Not sure if I’m missing something or not, but I’m trying to filet the purple surface to the black surface to make a smooth blend. I tried variable filet surface and filet surface but it still doesn’t seem to be working. Not sure where I went wrong. Any advice would be wonderful. Again, sorry for novice errors. I don’t have any formal guidance on Rhino and have been teaching myself so I don’t have many people to ask when I can’t figure something out. I try watching videos, but still can’t seem to figure what step I missed.

Thanks. fillethelp.3dm (3.3 MB)

For this I would trim back both surface sets then use surface blend.