Instance swaps not retaining size alterations

Please help ​@Gleb   I’ve seen your solution to this a few times on Figma but I can’t seem to crack it.

I am currently working on a few landing pages that utilise our design system to swap out icons and logos, but none of them are sized to fit within the parameters we have set - design system icons are, at largest, 32x32, desired size is 108x108. I’ve created a component with the logo set at 108x108 and whenever I create an instance of that component and change the logo it shrinks back down to 32x32.

I’ve seen your files and that you have found a solution, I’ve done my best to replicate but Im just not getting the same result! I’ve linked a test file below with just basic shapes and colours.

https://www.figma.com/design/V8W0Qh2YjrWipuoJBsKalE/Untitled?node-id=0-1&t=k7XtHDPJQMK1YJtR-1