Use the expression editor to configure the expression field. The expression can contain constants, variables, built-in functions, and user-defined functions. You can also create a complex expression by nesting functions within functions.
To configure an expression, enter it in the expression editor.
The following image shows the expression editor and the actions you can perform:
Parameterize the expression.
Switch between fields, system variables, parameters, built-in functions, and user defined functions.
Validate the expression.
You can add source fields, functions, and variables to the expression by clicking
next to the object that you want to use. You can also type in the expression manually.
Alternatively, press the
keys to see a list of recommended arguments and functions in-line.
provides recommendations based on the type of function arguments and keystrokes. In-line recommendations are not available for hierarchical source data.