Hi, We're trying to create and use an ArrayList. Do we declare one in the variables tab? Do we have to import something? Right now, we are able to declare an ArrayList in variables, but it does not work when we try to run the ArrayList.add() function. Thanks!
Alternatively, you can add this class to the "Imports" list in the simulation information dialog (icon at the top-right), in its "Run options" tab. Then, you can just use ArrayList as the name of the class.
