Struts 2 Iterator, Param and Text tags usage

[Davis, Chad]

I'm trying to figure out how iterate over a collection of parameters to pump 
into a text tag.  This is what I would like to do:

<s:text name="%{eventtype.i18nkey}">
   <s:iterator value="messageParameters">
      <s:param><s:property/></s:param>
   </s:iterator>
</s:text>

But it blows up and writes some stuff to the tomcat logs that appears to 
suggest I'm using the tag wrong ;)  

java.lang.NullPointerException
        at 
com.opensymphony.xwork2.util.TextParseUtil.translateVariables(TextParseUtil.java:168)
        at 
com.opensymphony.xwork2.util.TextParseUtil.translateVariables(TextParseUtil.java:115)
        at 
com.opensymphony.xwork2.util.TextParseUtil.translateVariables(TextParseUtil.java:88)
        at org.apache.struts2.components.Component.findValue(Component.java:381)
        at 
org.apache.struts2.components.Component.findString(Component.java:203)
        at org.apache.struts2.components.Param.end(Param.java:121)



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