Forcing a new lap in the fit file by a datafield

I would like to be able to force the start of a new lap in the fit file of an activity that is being recorded. The manual mentions an option for adding a lap by means of "addLap".
But that it is only available in a full blown app, not in a datafield, as setting up the required session for it gets this error message:
Module 'Toybox.ActivityRecording' not available to 'Data Field'
Permission Required


Is there something like addLap available for datafields?