Dynamically sized Form problem: getting String[] from multiple select

[Oleg]

I am setting up Dynamically sized  form with scope="request" so my
bean consists of 2 TreeMaps, one to display (fields objects: name,
type,...) and one to receive values from the form(values Strings). The
problem is that when form submitted I can only get one value as a
String and not String[] if its a multiple select box value.

struts-config.xml
-----------------------------------------
<form-bean name="dynamicHashmapForm"
type="org.apache.struts.validator.DynaValidatorForm">
     <form-property name="fields" type="java.util.TreeMap" />
<form-property name="values" type="java.util.TreeMap" />
   </form-bean>

here is how I get the values from the form:

                TreeMap values = (TreeMap)df.get("values");
                Iterator it = values.keySet().iterator();
                while (it.hasNext()) {
                        String key = (String) it.next();
                        String value = (String) values.get(key);
                        System.out.println(key + ":" + value );
                }

If I attempt to get String[] instead of String, I get cast exception.
What can I do?

thanks,
Oleg

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