Shared Parameters Creation OOTB Nodes

Revit
1

Hello

I’m trying to create shared parameters and assign them to multiple categories.
lets say the list contains 20 parameters, first 5 are assigned to “Project Information” and the rest 15 parameters are assigned to all “Modeling Categories” (From MEPover).

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the script runs perfectly as long as the parameters are not in the same “group name” in the shared file loaded! if the parameters are there i get the nulls as you can see in the graph.

2

Personally, I wouldn’t do it this way.
Dynamo will create a different GUID under the hood for each project - if your users aren’t pointed to the same shared parameter file. And as you’ve noted, once it is added to the shared parameter file - well - it can’t be added again. Because “there can be only one”.

I use python to hard code my shared parameters along with their GUID. The basic flow is…

  • Create a new temp txt file for the parameter.
  • Write the parameter external definition to the file.
  • Switch from whatever parameter file the user has the project set to to the temp parameter file.
  • Load up my parameters - in the project or family.
  • Switch back to the original user selected parameter file.
  • Delete the temp shared parameter file.

This way I’m sure I’ll always get the parameters exactly the way I want it defined, and it is the same GUID between all projects and families.