3D Space Frame Top Chord Using Dynamo

I am a beginner in dynamo and would like ask you the workflow required to achieve my task.
I have a large sloped roof with space frame. I created the bottom chord and diagonal member chord using Revit curtain panel pattern based family and applied it on the roof surface. But unfortunately I can not create the Top chord member using this work flow. Is it possible to use dynamo to create this top chord member using the central node ?

Hello and welcome to the forum! As a new user, you could need to read this page before getting an answer:

You will probably need to build a first graph based on what is already available online (the search tool on top-right of this screen can help). It will then be possible to get help here on specific issues.
You will also find good basics on these pages:
Good luck! :slight_smile:

Dear Yna_Db,
Thank you for the replay. please have a look at the attached link.

This is something I am trying to achieve. and I got stucked at LunchBox Wire Space Truss Node.
Could you please have a look at my attached Graph. I am attaching my revit model and Graph here for your kind review
https://drive.google.com/drive/folders/0Bw6GA2wGIVm3cmozX0QzRXNFb1E?usp=sharing .
I need to provide a 3d Space frame on this divided surfaces. it is a 3x3m space frame with 1.5m depth. Your help will be highly appreciated.

I wish I could but I don’t have much time at the moment. But maybe someone else could help. Please see also this interesting thread:

Please send some screenshots too, this node shouldn’t be difficult to understand: