Bug Checkmk Datasource with "0" Value

Hello,
I try in other context.

As you can see, I have the same problem with CRITICAL, when I have 0, I lost the graph.

When I’m focus on Critical, we can see that :

And of course, If I want to see the last 5 min, I have “no data”.

However, for a Single Stat, I can fix it by “No value → 0”

But this options don’t works with Graph :

As you can see, I don’t see 0 Critical for the 5 last minutes on this graph.

Without the classical “fill : zero” on usually data base, I currently don’t find solution to have 0 on a Graph.

Thank you.