JSON response msgs not converted to XML

JSON response message is not converted to XML, when JSON contains "-" (hyphen-minus) at the begining of object name, for example:

{
 "-id": "example_id"
}

SoapUI returns just "<xml/>" in XML response with error in log: Wed Aug 27 17:46:03 CEST 2014:ERROR:An error occurred [NCNames cannot start with the character 2d], see error log for details
hyphen-minus is valid character in JSON

(similar issue discussed here: viewtopic.php?f=2&t=23652)


nu.xom.IllegalNameException: NCNames cannot start with the character 2d
at nu.xom.Verifier.throwIllegalNameException(Verifier.java:147)
at nu.xom.Verifier.checkNCName(Verifier.java:126)
at nu.xom.Element._setLocalName(Element.java:832)
at nu.xom.Element.<init>(Element.java:112)
at nu.xom.Element.<init>(Element.java:76)
at com.eviware.soapui.impl.rest.support.handlers.JsonXmlSerializer$CustomElement.<init>(JsonXmlSerializer.java:1744)
at com.eviware.soapui.impl.rest.support.handlers.JsonXmlSerializer.newElement(JsonXmlSerializer.java:1090)
at com.eviware.soapui.impl.rest.support.handlers.JsonXmlSerializer.processJSONObject(JsonXmlSerializer.java:1255)
at com.eviware.soapui.impl.rest.support.handlers.JsonXmlSerializer.processJSONValue(JsonXmlSerializer.java:1325)
at com.eviware.soapui.impl.rest.support.handlers.JsonXmlSerializer.processJSONArray(JsonXmlSerializer.java:1143)
at com.eviware.soapui.impl.rest.support.handlers.JsonXmlSerializer.processJSONValue(JsonXmlSerializer.java:1317)
at com.eviware.soapui.impl.rest.support.handlers.JsonXmlSerializer.processJSONObject(JsonXmlSerializer.java:1256)
at com.eviware.soapui.impl.rest.support.handlers.JsonXmlSerializer.processJSONValue(JsonXmlSerializer.java:1325)
at com.eviware.soapui.impl.rest.support.handlers.JsonXmlSerializer.processJSONObject(JsonXmlSerializer.java:1256)
at com.eviware.soapui.impl.rest.support.handlers.JsonXmlSerializer.processJSONValue(JsonXmlSerializer.java:1325)
at com.eviware.soapui.impl.rest.support.handlers.JsonXmlSerializer.processJSONObject(JsonXmlSerializer.java:1256)
at com.eviware.soapui.impl.rest.support.handlers.JsonXmlSerializer.processJSONValue(JsonXmlSerializer.java:1325)
at com.eviware.soapui.impl.rest.support.handlers.JsonXmlSerializer.processJSONArray(JsonXmlSerializer.java:1143)
at com.eviware.soapui.impl.rest.support.handlers.JsonXmlSerializer.processJSONValue(JsonXmlSerializer.java:1317)
at com.eviware.soapui.impl.rest.support.handlers.JsonXmlSerializer.processJSONObject(JsonXmlSerializer.java:1256)
at com.eviware.soapui.impl.rest.support.handlers.JsonXmlSerializer.processJSONValue(JsonXmlSerializer.java:1325)
at com.eviware.soapui.impl.rest.support.handlers.JsonXmlSerializer.processJSONObject(JsonXmlSerializer.java:1256)
at com.eviware.soapui.impl.rest.support.handlers.JsonXmlSerializer.write(JsonXmlSerializer.java:735)
at com.eviware.soapui.impl.rest.support.handlers.JsonXmlSerializer.write(JsonXmlSerializer.java:690)
at com.eviware.soapui.impl.rest.support.handlers.JsonMediaTypeHandler.createXmlRepresentation(JsonMediaTypeHandler.java:69)
at com.eviware.soapui.impl.wsdl.submit.transports.http.BaseHttpResponse.getContentAsXml(BaseHttpResponse.java:462)
at com.eviware.soapui.impl.wsdl.teststeps.RestTestRequestStep.propertyChange(RestTestRequestStep.java:485)
at java.beans.PropertyChangeSupport.fire(Unknown Source)
at java.beans.PropertyChangeSupport.firePropertyChange(Unknown Source)
at java.beans.PropertyChangeSupport.firePropertyChange(Unknown Source)
at com.eviware.soapui.model.support.AbstractModelItem.notifyPropertyChanged(AbstractModelItem.java:90)
at com.eviware.soapui.impl.support.AbstractHttpRequest.setResponse(AbstractHttpRequest.java:896)
at com.eviware.soapui.impl.wsdl.teststeps.RestTestRequest.setResponse(RestTestRequest.java:140)
at com.eviware.soapui.impl.wsdl.teststeps.RestTestRequestStep.run(RestTestRequestStep.java:927)
at com.eviware.soapui.impl.wsdl.support.AbstractTestCaseRunner.runTestStep(AbstractTestCaseRunner.java:239)
at com.eviware.soapui.impl.wsdl.testcase.WsdlTestCaseRunner.runCurrentTestStep(WsdlTestCaseRunner.java:52)
at com.eviware.soapui.impl.wsdl.support.AbstractTestCaseRunner.internalRun(AbstractTestCaseRunner.java:152)
at com.eviware.soapui.impl.wsdl.support.AbstractTestCaseRunner.internalRun(AbstractTestCaseRunner.java:47)
at com.eviware.soapui.impl.wsdl.support.AbstractTestRunner.run(AbstractTestRunner.java:139)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)