Task

Create a window that has:

   a label that says   "There have been no clicks yet" 
   a button that says   "click me"


Upon clicking the button with the mouse, the label should change and show the number of times the button has been clicked.




DynamicModule[{n = 0}, 
 CreateDialog[{Dynamic@
    TextCell@If[n == 0, "There have been no clicks yet", n], 
   Button["click me", n++]}]]