Furniture lines on top of wall section lines plan and section

Our elements are not 2d, even if they were, we would like to use masking regions to be on top of floor finishes.
There is no way we can hide one segment of a mask boundary through a parameter.
This is an intent of a graph that drop a line if the bounding box of the elements intersect.
I am not sure why it is not working???

Payam Rad, one connection on a Revit forum, has given me a great workaround which is to place two viewport on a sheet.
The second one only containing walls and walls hosted elements visible.
It seems to be working pretty neat.
Thanks!

@BIMadmin Could you share the solution here. It will help others with similar issues. Thanks!

Hello Kulkul,
I just did, the solution is two place two viewports on a sheet.
The order make a difference in Revit.
We place first the viewport that behaves like background and after the viewport with only visible walls and hosted elements in wall.
These way the grey lines will not be on top.

Could you add the link to the post you mentioned on the Revit forum? The only one I can find id this one:

Hello,
This is the one
https://www.linkedin.com/groups/68075/68075-6335067140936343557