Regarding a Dropdown widget, what is true about the data types used?

The correct choice emphasizes the requirement that the data type of the variable must match the data types of the values defined in the Dropdown widget. This is essential because the Dropdown widget needs to ensure consistency and compatibility when the selected value is processed or used within the application. If the variable's data type differs from the values provided, it could lead to errors, invalid data submissions, or unexpected behavior in the application logic. Thus, maintaining matching data types is crucial for successful data handling in OutSystems.

Understanding the significance of this rule allows developers to structure their applications correctly, ensuring that user inputs are valid and properly managed, thus enhancing the overall functionality and reliability of the application.