How to extract Revit Shared Parameters?
And how to extend the built-in parameters received from Revit?
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Hi @mustafa.salah Revit Shared Parameters should automatically be read in with the Revit Reader. No parameters need to be changed or attributes need to be exposed. The parameters should show under the appropriate Feature Type's parameters as a new attribute. For example, when I read in this simple wall object, the shared parameters are read in as well. 
What version of FME are you running on your machine? This functionality was added in FME 2019.1.
Additionally, if you're still unable to view the shared parameters, would you be able to share the .rvt file with us? If you're not comfortable sharing the file publicly you can upload the file to our Support FTP.
OK, so let me clarify my approach:
1 - I have Revit file with some built-in/shared parameters.
2 - I want to export all parameters through FME to JSON
3 - Not all parameters are exported.
In the attached file you will find a sample Revit 2021 project with some shared parameters defined (area & length) assigned to "Analysis Result" and "Dimensions" groups respectively.
The exported JSON file (included in the attached archive) you will notice most of the parameters are not exported/accurate and the shared parameters didn't come along.
I'm running FME(R) 2021.1.3.1 (20211029 - Build 21635 - WIN64) on my machine.
OK, so let me clarify my approach:
1 - I have Revit file with some built-in/shared parameters.
2 - I want to export all parameters through FME to JSON
3 - Not all parameters are exported.
In the attached file you will find a sample Revit 2021 project with some shared parameters defined (area & length) assigned to "Analysis Result" and "Dimensions" groups respectively.
The exported JSON file (included in the attached archive) you will notice most of the parameters are not exported/accurate and the shared parameters didn't come along.
I'm running FME(R) 2021.1.3.1 (20211029 - Build 21635 - WIN64) on my machine.
This is how my workspace looks like:
The Reader has to be set to "All", don't change it to specific feature.
@mustafa.salah unfortunately at the moment our Revit Reader doesn't support reading parameters such as length or area. However, we are looking at adding these parameters to be read by the Revit Reader in a future release of FME. We currently have an enhancement request open tracking this issue (FMEENGINE-71383). If a fix is released we will notify you here. Thanks for your patience!
We recently improved the Revit reader to include additional attributes such as length and area.
Please try the Revit Reader in FME 2022.1 or newer to see the improvements with additional attributes!
-Andrea
We recently improved the Revit reader to include additional attributes such as length and area.
Please try the Revit Reader in FME 2022.1 or newer to see the improvements with additional attributes!
-Andrea
Thanks very much. I'll try it for sure then let you know the results.
Do I have to upgrade my FME Server to 2022 if I want to publish the workspace?