When i put the formula in the default property, it worked a treat. However, doing that meana i'm defaulting the data card value to the Lookup value. It is good when i open up a new form, but it will still show up as the default value when i open in edit/view mode. The SharePoint list item will show the correct value, but when clicked into PowerApps, it shows the default value.
I'm doing this on a customised form.
Do you know how i can overcome the value discrepancies?