When an advanced condition with an expression is placed right after an open Subform/Subview action in a rule, the advanced condition may evaluate incorrectly.
If your rule actions are set similar to the following:
And if an expression is used in the advanced condition after the "open Subform" action:
The advanced condition may not evaluate correctly.
To resolve this issue, add another data label and set it to the expression that you want to use in the advanced condition. Next, set the advance condition to evaluate using this data label instead.