Issue with round feature

I am using Creo Parametric Release 6.0 and Datecode6.0.0.0

Cannot obtain a constant radius round at the edge created by intersection of two swept bodies. I want to create a constant radius round for 200 mm whereas creo is allowing only to fillet with variable radius ranging from 60 mm to 200 mm. Is there any way to obtain a constant radius round?

Round Settings 1:
Mode - Set mode
Radius 1 - 60 mm
Radius 2 - 200 mm
Attachment - Solid

Round Settings 1 leads to successful development whereas the actual required round is to be of constant radius 200 mm

Here are the errors that I faced
Feature failed to regenerate.