Hi @adownie,
Great to see you again here!
have you checked out some related posts on the same?
- d2: daysbetween AND d2:yearsbetween not working properly in 2.27 build revision b6e8cde
- Program rule for Age value type
- Using age-type attributes in program indicator calculations
- Programme Rules
- Storing value type 'Age' in numeric form
Let me know if they help.
Best,
James.