Hi everyone,
again sorry for my little understanding of dynamo, I’ve been looking for a solution to this problem on internet, with different approaches, and still don’t get with it…
Now, I made this definition attached, that works fine on some test files I created… Now when comes to a complex file, it gave me several errors… and some of them are pretty new to me… 
Thank you for all your help…
keynote to description_final.dyn (10.6 KB)
The Python script gives me a “IronPythonEvaluator.EvaluateIronPythonScript operation failed.
Insufficient memory within specified address space range to continue the execution of the program.”
And the FamilyIstance.FamilyType gives me null value on some categories…
Thanks for your help!