Dimmer exception (rfxcom)

I get an exception in the log on my dimmers that are defined as follows:

Excerpt from my rfxcom.things file

Thing lighting2 62655742_5  [deviceId="62655742.5", subType="AC"]

From my lights.items file

Dimmer Living_Room_Window { channel="rfxcom:lighting2:rfxtrx433:62655742_5:dimminglevel" }

Defined in the sitemap as

Slider item=Living_Room_Window

The exception in the logs

19:14:03.902 [INFO ] [smarthome.event.ItemCommandEvent    ] - Item 'Living_Room_Window' received command 47
19:14:03.910 [INFO ] [marthome.event.ItemStateChangedEvent] - Living_Room_Window changed from NULL to 47
19:14:04.093 [ERROR] [ome.core.thing.internal.ThingManager] - Exception occured while calling handler: java.lang.IllegalArgumentException: Not valid value selector
java.util.concurrent.ExecutionException: java.lang.IllegalArgumentException: Not valid value selector
	at java.util.concurrent.FutureTask.report(FutureTask.java:122)[:1.8.0_111]
	at java.util.concurrent.FutureTask.get(FutureTask.java:206)[:1.8.0_111]
	at org.eclipse.smarthome.core.common.SafeMethodCaller.callAsynchronous(SafeMethodCaller.java:188)[96:org.eclipse.smarthome.core:0.9.0.201612091054]
	at org.eclipse.smarthome.core.common.SafeMethodCaller.call(SafeMethodCaller.java:81)[96:org.eclipse.smarthome.core:0.9.0.201612091054]
	at org.eclipse.smarthome.core.common.SafeMethodCaller.call(SafeMethodCaller.java:65)[96:org.eclipse.smarthome.core:0.9.0.201612091054]
	at org.eclipse.smarthome.core.thing.internal.ThingManager.receiveCommand(ThingManager.java:364)[103:org.eclipse.smarthome.core.thing:0.9.0.201612091054]
	at org.eclipse.smarthome.core.items.events.AbstractItemEventSubscriber.receive(AbstractItemEventSubscriber.java:46)[96:org.eclipse.smarthome.core:0.9.0.201612091054]
	at org.eclipse.smarthome.core.internal.events.OSGiEventManager$1.call(OSGiEventManager.java:192)[96:org.eclipse.smarthome.core:0.9.0.201612091054]
	at org.eclipse.smarthome.core.internal.events.OSGiEventManager$1.call(OSGiEventManager.java:1)[96:org.eclipse.smarthome.core:0.9.0.201612091054]
	at org.eclipse.smarthome.core.common.SafeMethodCaller$CallableWrapper.call(SafeMethodCaller.java:179)[96:org.eclipse.smarthome.core:0.9.0.201612091054]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)[:1.8.0_111]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)[:1.8.0_111]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)[:1.8.0_111]
	at java.lang.Thread.run(Thread.java:745)[:1.8.0_111]
Caused by: java.lang.IllegalArgumentException: Not valid value selector
	at org.openhab.binding.rfxcom.RFXComValueSelector.getValueSelector(RFXComValueSelector.java:120)[173:org.openhab.binding.rfxcom:2.0.0.201612091712]
	at org.openhab.binding.rfxcom.handler.RFXComHandler.handleCommand(RFXComHandler.java:82)[173:org.openhab.binding.rfxcom:2.0.0.201612091712]
	at org.eclipse.smarthome.core.thing.internal.ThingManager$3.call(ThingManager.java:367)[103:org.eclipse.smarthome.core.thing:0.9.0.201612091054]
	at org.eclipse.smarthome.core.thing.internal.ThingManager$3.call(ThingManager.java:1)[103:org.eclipse.smarthome.core.thing:0.9.0.201612091054]
	... 5 more
19:14:04.096 [INFO ] [smarthome.event.ItemCommandEvent    ] - Item 'Living_Room_Window' received command 47

Just noticed that it works if I change the items bindning to dimmingLevel with a capital L, not sure where one should find that out without digging in to the source. The README.md says dimminglevel in the list of channel type ids…

Should I open a PR with a correction for that or should the comparison be fixed to be case insensitive?

ping @pauli_anttila looks like you have created that part of the readme

Have the same error in my logs. Changed to dimmingLevel (with capital L) but the error is still there. There are lot of error text coming up in the log every time I send a command to the thing but the dimmer works as it should.