Persistence sumSince() doesn't output a valid numer, only zero

[rossko57]

I think you will find this relevant (you can’t sum strings)

Persistence: sumSince / influxdb / sumSince

i try to count how many times a pump turned on. the pump is configured as switch. sumSince returns 0, in case i change the item to a temperature (Number), sumSince works correct… any hints ? thanks in advance

Note also you probably want your count as a plain Number type, not Dimendionless which is really for ratios or percentages.