Chart display in sitemap

I’m having trouble using charts in sitemap.
In the configuration I’m using mapdb as default persistance, and mysql is configured well.

This link is working well:

In the sitemap I have this item:
Chart item=itemWatts service=mysql period=3D refresh=10000

The url that generated in the site map is:
and it uses the mapdb (I guess…) so I see only one straight line.

Does someone have ideas why the generated chart in sitemap not showing the service?


The mysql in service needs to be wrapped in quotes. It is delightfully inconsistent as you must not put the 3D in period in quotes.

Chart item=itemWatts service="mysql" period=3D refresh=10000

Thank you!!! works like a charm.