[SOLVED] Homegear binding: Can't convert QuantityType error

Hello,
after updating to openhab2.4 on my raspberry, the homegear-binding throws this error:

2018-12-29 09:00:17.877 [WARN ] [ematic.handler.HomematicThingHandler] - Can’t convert type QuantityType with value ‘4.5 °C’ to FLOAT value with DecimalTypeConverter for ‘NEQ0670874:1#MANU_MODE’, please check the item type and the commands in your scripts
2018-12-29 09:00:17.888 [WARN ] [ematic.handler.HomematicThingHandler] - Can’t convert type QuantityType with value ‘4.5 °C’ to FLOAT value with DecimalTypeConverter for ‘NEQ1252471:1#MANU_MODE’, please check the item type and the commands in your scripts

I want to set my MAX-thermostat to status OFF( off == 4,5 with MAX) within this rule:

rule "Dachfenster auf"
when
	Item Fensterkontakt1_1_State changed to OPEN
then
//	logInfo("Heizung Dachgeschoss","Dachfenster geöffnet")
	Heizkoerperthermostat1_1_ManuMode.sendCommand(4.5)
	Heizkoerperthermostat2_1_ManuMode.sendCommand(4.5)
//	logInfo("Heizung Dachgeschoss","Heizung Dachgeschoss ausgeschaltet")
end

I have tried several formats like a single 5 “4,5” “4.5” but nothings works.

Any hints to shutdown the thermostats?

Greets
Andy

Hello Andy,
Have you searched the forum before asking your question?..

Hello,
shame on me. I have searched, but wrong. Many thanks for your help. Problem is solved.
Greets
Andy