Hi all,
I’m trying to create a shared parameter file in Revit from an excel file using dynamo. I created this script but there’s a warning at the end. Can anybody help me? Thanks in advance
The warning is: Warning: Parameter.CreateSharedParameter operation failed.
Invalid parameter type.
Do you want to create a shared parameter or a shared parameter file ?
Hey Francois,
Thanks for your reply. I know how to create a shared parameter file in Revit. I just watched a video on YouTube and tried to test that:
here is the link:
(354) Dynamo Shared Parameters and Project Parameters - Way Faster Wednesday - YouTube
But it didn’t work.
could you share a screenshot with all the pop up window open (click at the right bottom)
one or some input are wrong but maybe it is not the parameter type
show the group list
The problem is going to be with your data types.
I’m guessing your instance field is coming in as a string - not a bool. You can see Excel is importing as strings. You’ll need to convert those to bools.
The error message suggests it is the type that is bad as well. This is a string, but I’m guessing there is a typo or invalid category in the list.
I’m not sure this is best practice, as this routine can create different shared parameters - even though it is reading the same Excel spreadsheet - in different projects. It is the GUID that matters. The Parameter.CreateSharedParameter node has to make a GUID on the fly to build the shared parameter and then imports the parameter. All ok, until you want to share information between projects or use the parameter inside a family.
This will really fail if you try and use it when you are building families. Each time you start building a new family - you get a unique parameter. So you build Door A with “My Parameter” and then Door B with “My Parameter” - you get two completely unique parameters.
But that isn’t an issue with this node - as it only runs on a project. It should really be called CreateProjectSharedParameter.
And if you are trying to call it on a family file - it will give you the exact error you have posted.
You mean this?
This is for the groupnames, but for the group I just put a text, I dont know what it is exactly
Dont know what is the difference betweeb group and groupname in this node
I think group list should be a list of numbers (as text)
I tried text for group node but didnt work. I think there’s something wrong with that video in YouTube, working with shared parameters needs Orchid packages
Geart! thank you so much, now it’s working 
