SoapUI/Groovy: can not get response when set test step name variable -

my groovy code below. can request , response when use real test step name in the:

def request=context.expand('${"teststepname"#request}') def response=context.expand('${"teststepname"#response}') 

when change use variable:

def request=context.expand('${${currentstep.name}#request}') def response=context.expand('${${currentstep.name}#response}')** 

i can request, while fail response. error is

org.apacge.xmlbeans.xmlexception: error: unexpected end of file after null error @ line: xx 

the test step currentstep points has been executed , has request/reponse.

can anyboby here kindly me?

    import com.eviware.soapui.support.xmlholder     import com.eviware.soapui.impl.wsdl.testcase.wsdltestruncontext     import groovy.sql.sql     import oracle.jdbc.driver.oracletypes     import com.eviware.soapui.impl.wsdl.teststeps.wsdltestrequeststep      def currentstep = testrunner.testcase.getteststepat(6)     log.info "currentstep.name: " + currentstep.name     // hold of request     def request=context.expand('${${currentstep.name}#request}')     log.info " request: " + request      // desired node value request     def xmlreq=new xmlholder(request)      // hold of response     def response=context.expand('${${currentstep.name}#response}')     log.info " response: " + response      // desired node value response     def xmlres=new xmlholder(response) 

i solved issue efter reading message.

http://community.smartbear.com/t5/soapui-ng/resolved-pass-a-variable-into-context-expand-code/td-p/43025

    string propertyspec = '${' + currentstep.name + '#response}'     log.info "propertyspec : ${propertyspec}"     def response = context.expand(propertyspec)     log.info("context.expand(propertyspec) : ${response}")     def xmlres=new xmlholder(response)