What is the required variable type to store a selector in the selector property of an activity?

The selector property of an activity needs to be of the String variable type because selectors are typically defined in a textual format that describes the elements in the User Interface (UI) you want to interact with. These selectors are used to identify specific UI elements based on attributes such as the name, type, or accessibility properties.

Using a String type allows you to define and manipulate these selectors easily, as they represent the paths in a readable format. For instance, a selector would look something like this: "", which is encapsulated in string format.

Other variable types like UiElement or Object would not be suitable because they pertain to different usages in automation activities. UiElement is meant to represent a particular element in a UI that you have interacted with, while Object can refer to various data types but lacks the specific attributes needed for defining UI selectors. Int32 is a numeric type, which is not applicable for storing these textual descriptions.