New to Alibre CAD - "concave fillet" - how to?

[hhsmiley]

Been messing with the trial version for a little while and just purchased Alibre standard. Pretty new at all this in general so I apologize if my questions are dumb.

I just need to know how to put a fillet that is concave on an edge instead of the regular rounded over kind.

See pic:



Basically I need a smooth transition from the gray down to the blue face all along that edge. Also it will need to somehow transition smoothly back to a regualr fillet around the black circled area.

Thanks for any help on this.

[Dave1]

Fillet the planes/surfaces not the edge. You may have to uncheck the constant radius box.
Dave