Auto Wall / Floor join in selected section

Hi All,

Fairly new to Dynamo and trying some basic commands. We are a large practice who work on massive projects and looking to streamliine the drawing production process. One area which I know has been discussed before is auto wall / floor joins.

As a practice we use use design options extensively an dI think this might be causing my script not to work.

I have attached a picture to this feed. What I need to do is select all walls and floor objects in a particular section view (success) then auto join these. The script runs fine with no errors but doesnt do anything regarding the wall joining. The script used is from previous feeds which others have had success therefore my thought is design options?

Thanks

Just a tip: Synthesize has joining nodes using Join Geometry from HotGear, which code consists (partially) in this: