My goal is to track how much time is spent on a platform and then show it as a visual in Learning Locker. However, when I POST the statements and try to create a visual of it, nothing shows. How should I be doing this?

I have posted the xAPI statements as follows:

[
    {
        "actor": {
            "objectType": "Agent",
            "name": "John Doe",
            "mbox": "mailto:[email protected]"
        },
        "verb": {
            "id": "http://adlnet.gov/expapi/verbs/experienced",
            "display": {
                "en-US": "experienced"
            }
        },
        "object": {
            "objectType": "Activity",
            "id": "http://example.com/activities/metaverse-platform",
            "definition": {
                "name": {
                    "en-US": "Metaverse Platform"
                },
                "description": {
                    "en-US": "Time spent in the Metaverse platform"
                }
            }
        },
        "result": {
            "duration": "PT2H"
        },
        "timestamp": "2024-01-15T00:00:00Z"
    },
    {
        "actor": {
            "objectType": "Agent",
            "name": "John Doe",
            "mbox": "mailto:[email protected]"
        },
        "verb": {
            "id": "http://adlnet.gov/expapi/verbs/experienced",
            "display": {
                "en-US": "experienced"
            }
        },
        "object": {
            "objectType": "Activity",
            "id": "http://example.com/activities/metaverse-platform",
            "definition": {
                "name": {
                    "en-US": "Metaverse Platform"
                },
                "description": {
                    "en-US": "Time spent in the Metaverse platform"
                }
            }
        },
        "result": {
            "duration": "PT4H"
        },
        "timestamp": "2024-01-16T00:00:00Z"
    }
]

And it shows in the Source tab on LL. But when I try to make a bar chart, I can’t figure out how to display it. I assume I need to do Sum of, and then Raw Results. But nothing shows when I select this.

enter image description here