IFC Custom PropertySets not working

[dherrington]

Running Revit 2019 SP2.

I have been trying all afternoon to define some custom properties for IFC export using the "Export User Defined Property Sets" button in the IFC export "Modify Setup" dialog.

I have read 2 AutoDesk instructions on the topic and watched several YouTube instructional videos.  They all seem to indicate that I'm doing things correctly.

Revit doesn't seem to be doing anything with my custom ParameterSets file.

Does the "Export User Defined Property Sets" button in AutoCAD 2019 work?  Are there any known issues that would cause it to fail?

Please help.

[barthbradley]

Can you provide more information? Just saying "Revit doesn't seem to be doing anything with my custom ParameterSets file"  doesn't tell us much.   

[dherrington]

Thanks for responding. I really hope this is a simple problem and I'm missing something that is obvious to you.



I am very experienced with Revit, but new to IFC. I am trying to export a custom set of IFC properties, with some Client specific information associated with the project and all project entities.



To get started, I have added two properties to the Project Information family in Revit. They are called NameModelResponsible and Address. I will add many more properties once I've got this proof-of-concept working.



When I export to IFC, I use an with the "Export user defined property sets" toggled on pointing to a user defined property set file. I based this file on the "DefaultUserDefinedParameterSets.txt" file installed with the 2019 IFC exporter.



This is what my user defined parameter sets file looks like:


PropertySet:

GRE_W_AzureSky_Author

I

IfcProject


NameModelResponsible

Text

NameModelResponsible


Address

Text

Address




The problem I am having is that Revit doesn't export these additional parameters. There is no difference in the IFC file when I check the "Export user defined property sets" box and provide the file. There is no message that the file contained errors or has issues.



Hopefully I'm just missing a simple step somewhere.



Any help would be greatly appreciated.

[dherrington]

It appears that the problem I was having is that I had the wrong case for some letters in the IFC class names.  For instance, the technical document I was following listed the IfcProject class as ifcProject.  For Revit to funciton properly the custom property set file must use the correct capitalization.