Automation: Instar 9420 2k+ Recording troubles

Hi There!

I started the HA journey just recently and currently having some challenges.
One of them is about the automation process of recordings.

Setup:
Instar 9420 2k+ outdoor camera integrated through generic camera (works fine)
Automation set up in the following way:

When IN-9420 Motion Alarm started detecting motion

Then do

action: camera.record
metadata: {}
data:
  duration: 60
  lookback: 60
  filename: /media/front garden camera/{{ now().strftime("%Y%m%d-%H%M%S") }}.mp4
target:
  area_id: front_garden
  entity_id: camera.in_9420_profile1
  device_id: XXX

The instar device works in that way that it will trigger a turn on of white light that is part of the camera.

Unfortunately, the lookback always starts when the light is turned off, which could mean that the trigger object (animal or anything -one else) hast already left the scene.

As I don’t have access to the instar forum (some problems with the activation email) I thought someone in this forum might have the same challenge and could give a hint at this.

Many thanks
Alex