Hi @Elin_SE:
To make pasting the expression a little easier:
- Copy the Position Expression to the Clipboard.
- Maximize the Timeline panel by double-clicking tab or pressing the tilde (“~”) key
- Show the Position property for each group by entering “Position” in the Timeline panel text field.
- Select each Position property that you want to apply the expression to and then paste.
Yes, step 4 will take some patience, but something that will speed it up is using command option a, Mac or control alt a, Windows to select all visible properties and then paste. If your list of Position properties extends beyond the visible area of the Timeline panel, click directly below the scroll slider at the right to page down to the next visible range of properties, select all visible properties again, and then paste again. Repeat until you’ve dong down the entire list of Position properties.
I’d save a few times as you go in case something doesn’t go as expected while doing this.