Expression Editor

A report's expression editor is a feature that lets users add, alter, or adjust expressions that are used to construct conditions or computed fields. You can define expressions that can compute the value when a document is generated at runtime using the Properties panel.

1. Click the f icon under the properties panel to launch the expression editor.
   Figure: Expression editor
   
   
2. Click the ellipsis button for the editor to be displayed.
    Figure: Expression editor
3.  Expression editor offers multiple options such as functions, operators, data source fields, report elements, constants, and variables to create an expression.
   Figure: Editor
4. You can add multiple lines of expression.

The options available on the Expression Editor page to create an expression are explained below.

Field	Description
Report Items	This option lists the report elements such as the report header, and top and bottom margin. Figure: Report items
Fields	This option contains available fields and dashboard parameters. Figure: Fields
Constants	This option contains Boolean variables. Figure: Constants
Functions	This option contains different types of functions. To know more about the functions, refer to Functions. Figure: Functions
Operators	This option allows you to select operators from the list. To know more about the operators, refer to Operators. Figure: Operators