Change dimmer settings

[PeJeWe]

when i call this: http://your-domoticz-ip:8080/json.htm?t ... order=Name

How and where can i change these dimmer/device settings within domoticz

"Level" : 100,
"LevelInt" : 15,
"MaxDimLevel" : 15

i want them to be:

"Level" : 100,
"LevelInt" : 16,
"MaxDimLevel" : 16