The output of a Run Button is a Boolean which evaluates
True if a user has pressed the button and
False if they haven't. For example, if a user refreshes an App (in App mode) or re-runs the Project (in Logic Mode), the button parameters have not explicitly been pressed and so will evaluate
False. When a user presses a Run Button, a full Project run is triggered. During that specific run, the button parameter will be evaluated
True. This means that only one button can be triggered per run of your project.