Using parameter in script agent based on Trigger prototype

[Sergio Paulo Samaan Filho]

I have a trigger prototype that uses {#INSTANCE} created on Discovery rule (LLD macros).

There is an action trigger related to that trigger that runs a script.

This script needs {#INSTANCE} but I can't figure out how to get that information.

I've tried to add as an parameter but no success.

How to use it?