Help:using customered data type parameters for webservices

file answer.cfc
<cfcomponent>
<cfproperty name="person" type="name">
<cfproperty name="answerText" type="string">
</cfcomponent>

file name.cfc
<cfcomponent>
<cfproperty name="Firstname" type="string">
<cfproperty name="Lastname" type="string">
</cfcomponent

webServices file myWebServices.cfc
<cfcomponent>
<cffunction name="echoAnswer" returnType="string" access="remote" output="false">
<cfargument name="input" type="answer">
<cfset returnS="">
<cfif arguments.input.person.FirstName eq "Xinkun">
<cfset returnS="Xinkun answered : ">
<cfset returnS=returnS&arguments.input.answerText>
<cfelse>
<cfset returnS="Xinkun did not answered">
</cfif>
<cfreturn returnS>
</cffunction>
</cfcomponent>

webServices client file servicesClientTest.cfm
<cftry>
<!---<cfobject component="answer" name="respons"> --->
<cfset respons=structNew()>

<!--- <cfobject component="name" name="tempN"> --->
<cfset tempN=StructNew()>
<cfset tempN.Firstname="Xinkun">
<cfset tempN.Lastname="Yuan">

<cfset respons.person=tempN>
<cfset respons.answerText="test answer">

<cfinvoke webservice=" http://localhost/CF_Webservices/myWebServices.cfc?wsdl" method="echoAnswer" returnvariable="outputV">
<cfinvokeargument name="input" value="#respons#">
</cfinvoke>
<cfoutput>
#outputV#
</cfoutput>
<cfcatch>
<cfoutput>
#cfcatch.Message#
</cfoutput>
</cfcatch>
</cftry>

There will be an error: 'Could not perform web service invocation "echoAnswer"' when I test the servicesClientTest.cfm.
help me please!