How to make an upgrade change a layer's "type"

I’d like to make an upgrade that changes a layer’s type from static to normal.

“normal":'“static"

Use this to Make It normal

use custom type

replace type: with type() {}

in the “{}”, add if (requirement) return “normal/static” (choose 1)

also in the “{}” on a new line or smt, add if (another requirement) return “normal/static” (choose 1)

example:

type() {

if (hasUpgrade(‘p’, 15) return normal

else return static

},