How to stop ArrayIndexOutOfBoundsException from being thrown when using DynaActionForm

[venkat reddy]

I'm using struts 1.2.7

struts-config.xml
===================

<form-bean name="multipleFieldForm"
type="org.apache.struts.action.DynaActionForm">
            <form-property name="choices" type="java.lang.String[]"
size="4"/>
</form-bean>


When the number of choices in the jsp page exceed the size it's throwing
ArrayIndexOutOfBoundsException. Please explain in detail how to stop it from
being thrown.