Generate a new date in the us format by pressing the calendar button. Then, use Tosca base functions to calcuate the first of the second following month of the generated date. The new date, that has to be entered in the editable text box, has to have the ISO format. For example, the initial date 12/24/2015 leads to 2016-02-01 as the correct result. To finish the challenge, press the “Done” button.