ADF Blob Trigger does not have @triggerBody().folderPath

Question

I followed the instructions here https://learn.microsoft.com/en-us/azure/data-factory/how-to-create-event-trigger? to create a pipeline and trigger but when I add a new file the trigger @triggerBody().folderPath and @triggerBody().fileName

in the body of the trigger looks like this:

{
"outputs": {
    "body": {
        "RunToken": "AAEAFO....."
    },
    "headers": {
        ...
    }
},
"originHistoryName": "08585080678291936867780979968CU85",
"endTime": "2023-09-01T03:30:56.2837211Z",
"status": "Succeeded",
"startTime": "2023-09-01T03:30:56.2837211Z",
"clientTrackingId": ".....",
"name": "Trigger_421B8CAF-BE66-42CF-83DA-E3028693F304",
"trackingId": "....."
}

What am i doing wrong?