anchor.diff:  
   + Parameters
       + device_id: 440cd2d8c18d7d3a () (required, string) - Id of the device to be updated
  -    + parameter: viewstate (required, string) - Parameter to be updat
  +    + sensor_id: display - Sensor ID to be updated
  +    + parameter: viewstate (required, string) - Parameter to be updated
       + value: marker52 (required, string) - new value
   
   ### Update device by Id [POST]
  
positive.code: ## Editors
  
    + Sami Jylkkä, Cyberlightning Ltd
    
  
  ## Status
  
negative.code:             }
          ]
  
  ## update [/?action=update&device_id={device_id}&sensor_id={sensor_id}&parameter={parameter}&value={value}]
  
  <b>update</b> HTTP POST method can be used for changing updatable sensor values. 
  Real virtual interaction backend uses the <i>device_id parameter</i> and looks up the IP address from reference table 
  