I am trying to create a field that tells me the number of days since a date in a date field (Shoot Date), then once a different field (Moderation Fine Tune) is altered the field tells me the number of days between two date fields (Shoot Date, Published Live). Our internal processes dictate that a date including a "/" is put in Moderation Fine Tune when that step is complete. I have used that for a test in the Boolean part of the formula.
If(Contains(${Potentials.Moderation Fine Tune},'/'),Datecomp(${Potentials.Published Live},${Potentials.Shoot Date})/1440,Datecomp(Now(),${Potentials.Shoot Date})/1440)