I did a short check on SML and Volkszaehler and it seems that my plugin is not able to read the data. Probably you need a plugin with capabilities based on the smartmeter-obis library. I assume you did look already at the pimatic-volkzaehler plugin?
I am not using the plugin. I have installed VZLogger and read the output via LogWatcher into Pimatic. But I am still watching for a more simple way.
@lschip The feature had been releases with email@example.com (April 2018)! Let me give it a try with css-inject as I have only tried this on the browser console
EDIT: Works for me! At least it works for me for items which are only shown on a single page. Please note you need create a CssInjectDevice and add it to one of the pages.
Rules and Scripts
Another problem is, the values received are always the same, so I would still need to query the values of whether to change in the period of 8 hours, this is not the case, it should be reported.
EDIT: Please do not use external image web-sites. You can upload images directly to the forum site as part of you post. Thanks