Signed-off-by: Jan N. Klug <jan.n.klug@rub.de>
```
openhab:send WC_Valve_cmd_Duration.sendCommand(10) // set the duration for the command to 10min
openhab:send WC_Valve_cmd_OpenWithDuration.sendCommand(ON) // start watering
-openhabsend WC_Valve_cmd_CloseValve.sendCommand(ON) // stop any active watering
+openhab:send WC_Valve_cmd_CloseValve.sendCommand(ON) // stop any active watering
```
If you send a REFRESH command to the last update timestamp (no matter which thing), **ALL** items from **ALL** things are updated