Push Update from Parent to Subform (Child)

Push Update from Parent to Subform (Child)

Hi,

I have a field in a parent form called date sampled and numeric field in the subform.

The fields work perfectly and generate a future date based on the date + number value, however, if the value in the parent form is changed it does not filter down to the subform, unless, I click a field in the subform. Then it re-calculates the field(s).

Any suggestions on how I can get it to push the changes down to the subform?

Many thanks

TOG