Expression Builder Dialog

5.26 Expression Builder Dialog

Use to visually design expressions for business rules.

Element	Description
Expression	This area displays the expression you are building. When you double-click items in the Variables navigation tree, the Operators area or the Functions navigation tree, this builds the expression in the Expression field. You can also create or edit expressions directly in the Expression area. Specify an argument for the selected function by placing the cursor inside the function in the Expression field and double-clicking expression or function to insert. For example, place the cursor inside the parentheses of test() and select the following a variable. This inserts the variable in the expression at the cursor position.
Undo Last Edit, Redo Last Edit, Clear Expression	The icons in the corner of the Expression Builder dialog enable you to perform the following tasks while building your syntax in the Expression field. Click the left arrow icon (first icon above the Expression field) to undo your last edit. Click the right arrow icon (second icon above the Expression field) to redo your last edit. Click the page icon (third icon above the Expression field) to clear the Expression field.
Insert Into Expression	When you either double-click items that are selected in the Variables navigation tree, the Operators area or the Functions navigation tree, or you can select the items and build the expression in the Expression field by clicking Insert Into Expression.
Content Preview	Build an expression by single-clicking elements in the Variables, Operators, and Functions fields. For example, expanding and single-clicking Variables and then Test displays a preview version of the expression in the Content Preview field. When the expression is complete, double-click the last element or click Insert Into Expression to display it in the Expression text entry area.
Description	Single-clicking a function displays a detailed description (including syntax usage) in the Description field.
Customizable	Specifies that the expression is customizable.

Variables Tab

Select a variable from the list to build expressions.Single-clicking a variable displays a description in the Description field. A preview version of the variable also displays in the Content Preview field.

Insert a variable into the Expression field by double-clicking it or clicking Insert Into Expression.

Functions Tab

Select a function from the list to build expressions.Single-clicking a function displays a detailed description (including syntax usage) in the Description field. A preview version of the function also displays in the Content Preview field. The syntax usage describes the expected arguments for the selected function. These arguments can be variables, parts, elements, literals, or other functions. Insert a function into the Expression field by double-clicking it or clicking Insert Into Expression.

Operators Tab

Select an operator from the list to build expressions.Single-clicking an operator displays a preview version of the operator in the Content Preview field. Insert an operator into the Expression field by double-clicking it or clicking Insert Into Expression.

Constants Tab

Select a constant from the list to build expressions.