How to replace local component to component from library

Hello folks,
I need to replace all component instances on my page to components from library. I try using the function swapComponent but I don’t know if it is the right path. Here is my code:

const old_com = figma.root.findOne(node => node.type == "INSTANCE" && node.name == "Icon") as InstanceNode; 
let new_com = await figma.importComponentByKeyAsync("7c5dd1fbdbd83b87ac6d7XXX");

old_com.swapComponent(new_com)

Nothing happens after starting my code.

Thanks