Displays a dialog box containing a question and an entry field for the user to reply to the question. The return value is a string containing the user’s response. If the user presses the cancel button on the dialog box, the response is null.
param2 (Optional) param3 (Optional) param4 (Optional)
• true | 1 (JavaScript) or 1 (FormCalc) (default)A string representing the user’s answer. If the user presses the cancel button on the dialog box, the answer is the null object.