making objects move up and down in a loop?

Hello everyone ...

I want to make some objects move up and down in loop and at a specific speed

I tried the ( sine behavior )

It worked fine but When sine starts it starts going down first, then goes up. How to make it go up first, instead of down first?

Is there a way to choose the direction at the beginning?

Change magnitude to a negative number

It works ... thank you so much