How do I make an object stay in the camera zone?

I really need help! I made a game called Cubey recently, and I'm making one for mobile, so I need the buttons to stay on the screen. Can anyone help?

Set object position to:

clamp( Self.X, ViewportLeft( Self.LayerName ), ViewportRight( Self.LayerName ) )

clamp( Self.Y, ViewportTop( Self.LayerName ), ViewportBottom( Self.LayerName ) )

Set object position to:

clamp( Self.X, ViewportLeft( Self.LayerName ), ViewportRight( Self.LayerName ) )

clamp( Self.Y, ViewportTop( Self.LayerName ), ViewportBottom( Self.LayerName ) )

Sorry, it doesn't work. All it does is makes the object move when it's off the screen. Thanks for your help, though!

I think you're probably gonna have to post a capx

Based on the very little information you provided, you might need Anchor behavior:

https://www.scirra.com/manual/88/anchor

yeah I agree with them above... without any or very little details on like how the screen is set up, is the level scrolling, is the button on the same layer as everything else(might have to be put on it's own layer) and so on. More details on how you got it set up would help us help you