Deprecated labels field YARA-L

I’m trying to create a detection for illicit consent grants for O365 and need to extract important values such as permissions, consent type, etc from the field target.labels["ConsentAction.Permissions"]

events:
    $e.metadata.log_type = "OFFICE_365"
    $e.metadata.product_event_type = "Consent to application."

    $permissions_raw = $e.target.labels["ConsentAction.Permissions"]

    $consent_type = re.capture($e.target.labels["ConsentAction.Permissions"], `ConsentType:\s*([^,]+)`)
    $scope = re.capture($e.target.labels["ConsentAction.Permissions"], `Scope:\s*([^,]+)`)
    $client_id = re.capture($e.target.labels["ConsentAction.Permissions"], `ClientId:\s*([^,]+)`)
    $resource_id = re.capture($e.target.labels["ConsentAction.Permissions"], `ResourceId:\s*([^,]+)`)

However when I save this a YARA-L rule, i’m getting the message “labels field is deprecated and might not populate as expected.” 
 

I checked the link UDM field list  |  Google Security Operations  |  Google Cloud Documentation but did not find a solid information about it. I ran a retro hunt for the relevant events I had and seems like it worked without any issue. Can someone let me know if it’s still okay to use the field I'm currently using?