How do I craft a Notion formula to compute days between dates using a conditional check?

Other Questions Notion
1

I need a Notion formula to compute day difference: if Completed date is missing, calculate days from Started until now; else, calculate days between Started and Completed.

if(
  isEmpty(prop("Completed")),
  computeDays(now(), prop("Started")),
  computeDays(prop("Completed"), prop("Started"))
)
2

hey try using: if(empty(prop(‘completed’)), dateBetween(now(),prop(‘started’),‘days’), dateBetween(prop(‘completed’),prop(‘started’),‘days’)). it wroks fine for me, just double check your date types