Switch (dimmer) not working in domoticz

[highroller]

I use r78 and domoticz, i just attached a pushbutton that sends a dim command to domoticz but i get an error

Code: Select all

2016-04-09 13:46:41.132 MQTT: Topic: domoticz/in, Message: {"idx":36,"command":"switchlight","Set%20Level":5.00}
2016-04-09 13:46:41.133 Error: MQTT: Invalid data received!

[highroller]

Nobody that has the same problem?