Letzten Wert aus einer InfluxDB 2.0 per Powershell lesen

$InfluxHeader = @{
    Authorization = "Token cirerOxnW6poEs1tuU3LvF_XXXTnlz_nflaxRDumZ4aLEyuVVR8UXk87Ca5bhEGQpYRNV7kbYy_7ZNYpA5C6nw=="
    Accept = "application/csv"
    'Content-type' = "application/vnd.flux"
    }


$response = Invoke-WebRequest http://localhost:8086/api/v2/query?org=x -Header $InfluxHeader -Method Post -Body `
'from(bucket:"SmartShunt1") |> range(start: -15m) |>  filter(fn: (r) => r["_measurement"] == "SmartShunt1") |> filter(fn: (r) => r["_field"] == "UsedEnergy") |> last() ' 
($response.content ) | ConvertFrom-Csv -Delimiter ',' | select _value