How to set a variable/field for a layout?

Hi Im trying to create a section layout that has its own image background. just like the source example form the RTFM seems to do (
In this image you see a style="background: [[+background-image]]
But where would i create the ‘field’ for the background-image for the layout??

Hi @Rdg - sorry for not responding sooner. Must’ve overlooked the notification…

That field would be a field setting. There’s no image setting type yet, but you could create a dropdown that populates with a snippet from a “backgrounds” folder or something like that.