Display touch and GUI Touch

Unity Engine
1

Hello, I’ve wrote a test game, everytime I touch the display a text will be displayed otherwise nothing will be displayed.
Now I’ve implemented a Button into the Game and if I touch the Button the text will be displayed but the button does nothing(I’ve added scripts to the button).

How can I fix this problem?

2

ui button, event system, add script to button, add on click event, choose button, choose funktion in script (that should be run, and the funktion is public ) ?

3

Yes I added to the script to the ui button, and I’ve set up the on click event.
But It still don’t work.