[Pathfinder 2] How do you add you level on a skill check?

Hello, I'm struggling with the sheet for the familiar. I use a normal character sheet for him, but I don't know how to edit the skills: familiars add their level to all skills, but are not proficient in any of them, so I can't just select trained. I could select trained and add a custom -2 to every skill, but this is not a very elegant solution. I tried @{Level} but it doesn't work.

Options Tab > Skills > Untrained Proficiency > Level

@{level} (lowercase) should work, depending on where you place it. Depending on what kind of field/macro you place it in, you might need to wrap it in double brackets: [[@{level}]]

Thank you both, @{level} and [[@{level}]] don't work, but in this case Nelson solution is ok