Modify_xp_gain doesn't work.

[ghost]

After trying several differant iterations, modify_xp_gain doesn't seem to do anything. I've also looked at the discord server and have seen many other forge users having the same problem. Try this simple example:

{
    "type": "origins:modify_xp_gain",
    "modifier": {
        "operation": "multiply_base",
        "value": 2.0
    }
}