# Parameter `DomoticzIDX`
Default Value: `0`

The Idx number for the counter device. Can be obtained from the devices setup page on the Domoticz system.

!!! Note
    If you edit the config file manually, you must prefix this parameter with `<NUMBER>` followed by a dot (eg. `main.DomoticzIDX`). The reason is that this parameter is specific for each `<NUMBER>` (`<NUMBER>` is the name of the number sequence defined in the ROI's).
