Custom prop expression formula

[JoAntt]

Can i some how in Custom propertys expression get the real Mass, like

<=formatTheMassToKg(Mass)>

I dont want i logic or anything else.

And is it possible to format 123,13232mm to 123,2mm or 123,2?

[theo.bot]

You can only set the mass unit in the document settings. But for rounding the mass value I don't think there is a way without ilogic.
An exported parameter can be formatted. After setting a parameter to export, RMB on the parameter and choose "custom format". In this dialog you can define your output that is shown in the iproperties.

[b.mccarthy]

Just wondering why the "Custom Property Format..." option is only available for specific parameters:

Both parameters are inches.

Thank you.

[A.Acheson]

The Custom Property Format button becomes available when you check the parameter for export to iproperties. 

[b.mccarthy]

Thank you. I have never used it. Learn a little more about the software every day...