since it's a single value variable you should not use the regex syntax for the variable (in the editor). just specify $fields (regex & multi value variable is not supported in field selector)

duplicate of #6754

Hi @torkelo
Thanks for replying so fast.
Could you change the autocomplete that way that it suggests in this case $fields instead of the regex syntax?
So is there no option to use the all value to generate 2 diagrams or lets say 10 if there were 10 fields in the measurement?

yea, multiple values are not supported there (not sure InfluxQL supports it)

Thanks for the fast reply. So I have to create 20 diagrams (other table with much more fields). Hoped to avoid this.

Regarding InfluxQL: It would support multiple fields.

Original query
SELECT mean("TVOC") FROM "CCS811" WHERE time >= now() - 6h GROUP BY time(15s) fill(none)
modified/multiple fields query
SELECT mean("TVOC"), mean("eCO2") FROM "CCS811" WHERE time >= now() - 6h GROUP BY time(15s) fill(none)

but that expressed using variables as variables can just be interpolated so it would be mean("$variable") so any variable interpolation would not be able to produce mean("TVOC"), mean("eCO2")