RE: How to send Interface rule input value to the Expression Rule?

Mike Schmitt — Tue, 08 Mar 2022 16:26:09 GMT

In addition to Stewart's questions above, I have some slightly simpler preliminary questions:

Stewart Burchell — Tue, 08 Mar 2022 13:28:13 GMT

Some concepts will help you with the way data is passed around between objects in Appian:

a rule input (on an Interface or an Expression Rule) is a reference to a location where the value is actually held. In Java terms you can think of a rule input as a "pointer" to a location in memory. Crucially, a rule input is not a value, but a reference to a value
If an Interface has a rule input then the value will be typically be in an activity class variable in the the User Input Task node in the process that is displaying the Interface
to "send an Interface rule input to the Expression Rule" you'd map the Interface Rule Input to the corresponding Expression Rule Input, something like: myExpressionRuleInput: myInterfaceRuleInput