Alain Mb.

Good news, I believe to have fixed this issue. I am testing this out with Elastic 8.3.4 & 8.4 and Grafana 9.0

I'll be very cautious on updating this document for anything `8.x`. Have you tested that it works with `8.3.x`? Ref: #356

@jbazalar are you going to add it to a pipeline checks or just a baseline temple?