Set Variable Action

A set variable action is an action to assign a value to a user variable.

To change the value of a variable, select an element properties, select the Action tab, then click the New button; from the Choose Action Type dialog window, select the Set Variable Value radio button.

The Set Variable Window is shown below:

Value Expression

Values are expressions. You can create expression using the buttons in the variable dialog window, or directly type in to the Value Expression Box.

The simplest expressions are literals, including string literals and numerical literals. For example:

'abc@def.com'
'John Doo'
''
5

A string literal must be enclosed by single quote. The empty string is ''.

Expressions can also be arithmetic expressions and relational expressions. The value of an arithmetic expression is a numerical value; while the value of a relational expression is true or false. For example:

(x + y) * 10
x > y - 1

It is usually not necessary to understand the full scope of these concept for basic IVR applications. The common usage is to use a variable to hold some value, such as a user's email address. Advanced usages are for software integration with IVR application. For more information about variables and expressions, please consult a text book on programming language.

Build Value Expression

You can simply type in the value expression in the edit box. For example, 'john_email@yourcompany.com' as shown in the figure above. The buttons in the dialog window can also be used to build value expression.

If you want to add a system variable, simply select it from the dropdown list, and click the Add Variable button. The selected variable will be inserted into the value expression.