Cant get leader board to display

Hello all,
I have given my best and i cant get it can someone please tell me how to get a leader board to display. I have in the editor enabled google play support i have entered in my App ID i have entered in my license key i have created a leader board Map and added Name and ID from the google play console. Now all i have done in my blue prints is added a button and on the button i have a on clicked event that goes to " show platform specific leader board screen " and in the text i put the name of my map could someone please help cheers