UDFs are referred to in rules in much of the same fashion as external function libraries.
UDFs in Language Rules
UDFs are grouped under a specific heading in the menus for the business language editor.
As with imported external function libraries, UDFs can be used as both expressions and actions of rules.
UDFs in Syntax Rules
To use a UDF in a syntax rule expression or action, refer to the library name and function name using dot notation as displayed:
Because UDFs are available for use in syntax expressions and actions, they can therefore be utilized in the following locations:
Execute Method Action
The Execute Method action in irAuthor can also be used to invoke a UDF.