Control the behavior of a rule

Control how a rule behaves, whether it relates to a study's version, visits in the study or the JavaScript expression logic.

• isStudyVersion( )
  Compare the provided version with the current study version using the operator provided.
• getCurrentVisitPropertyValue( )
  Control rule behavior on different visits. For instance, if a rule is created on a question in a form, and that form is associated with multiple visits, you can raise a query only on certain visits in a study, not all visits.
• logMsg()
  Get specific information regarding a rule's logic while debugging. Place log statements where needed in the JavaScript expression to display values of defined variables and messages to reveal a rule's behavior.