To create a model that prompts the user for input data, use the ASK primitive.
Message is a required argument while default and title are optional.
Each time a value for Price is needed, a dialog box prompts the user for input. The user can respond in this dialog box with any DecisionPro command. DecisionPro evaluates the expression entered by the user and returns the result to the node containing the ASK statement. Although the default and title arguments are not used in the mortgage example, you can supply values for these arguments to so that a default value is displayed in the edit box and a title is displayed on the window title bar. The definition of all of the input nodes can be changed to include the ASK primitive as illustrated below.