Hi everyone, i need to add a button with transition/move function but i cant do that, help!

[Spartak250124747dfs]

Now im working with my project;
I have a scene and i need add a few buttons with any function (fisrt function - back, second - move to another scene) but I cant add a second button with transit scene function. When I try to add this button my project doesnt work. Thank you for any attention and answers!

[kglad]

what's the code you're using for your first button and the code that you tried for your 2nd button?