The dialog is displayed when you click the button
while specifying parameter values of Date, DateTime, or Time format. It helps you to specify a dynamic date or time parameter value with expression. See the dialog.
Template
Specifies the expression template on which to edit your expression.
Expression
Displays the expression. You can edit it directly in the text box to create your own expression.

Result
Displays the value result based on the specified expression, or gives error information if the expression is not correct.
OK
Sets the expression as the parameter value.
Cancel
Does not retain any changes and closes the dialog.
Help
Displays this help document.