Source and data models
Do not modify Infor-provided source and model spaces unless directed by Infor. Any modifications to these spaces may be overwritten in a future update.
Because we do not recommend modifying the source and model spaces, these Birst features
      cannot be added or modified:
    - Custom measures
 - Custom attributes
 - Data buckets
 
You can use expressions at the report level or shared using saved expressions to replicate this functionality.