The Action is designed for making prompt messages appear on the desktop. The message window contains buttons "Yes" and "No" along with the text of the message and a question icon. Depending on the user's answer, the Output Parameter of the Action is set to the corresponding value. This Output Parameter can be further used in IfStatement. See more on Statements.

This setting contains the text of the message.

This parameter is set to TRUE when "Yes" button is clicked.