@BIM_Dreamer wrote:
I'm not sure if this makes sense, I just adjust the sill height to standard 1meter then once loaded, then change the sill height to appropriate level and works, but has still issue cannot see the window frame partition, its either sweep or extrusion still cannot see the frame. Something wrong somewhere I cannot figure it out. strange? Thanks
I doubt the geometry is visible in Plan View. What you are likely seeing in Project Plan View is Detail line Work from
the Family.
...go into the family and check this box for the geometry you want to see in Project Plan View

FWIW...There is another Magic Trick you can do -- and you don't even need a Plan Region for this one. Want to know about it? Do this: Go to an Elevation View in the Family and draw a Model Line downward from the bottom of the Window Sill. Let's say make the Model Line 6 feet long. Now, reload it into the Project and check out how you see those same high Windows in a normal Plan View WITHOUT a Plan Region. Cool, huh?