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Retrieving indexed fields using by action [Struts]

Hello All !

I need to retrieve indexed fields using struts and im using DynaValidatorForm. Below, this is my code .

<logic:iterate id="paramEmpresa" name="listaParametros">
<div style="width: 600px;">
<div style="float: left; width: 250px;">
<label><bean:write name="paramEmpresa" property="dsParametro" ignore="true" /> </label>

<div style="float: right; width: 350px;">
<html:hidden name="paramEmpresa" property="cdParametro" indexed="true" />
<html:hidden name="paramEmpresa" property="tpParametro" indexed="true" />

<html:text name="paramEmpresa" property="vlParametro" size="25" value="" styleClass="required" indexed="true"/>
And now, the HTML render by struts after submit the form :

<input type="hidden" name="paramEmpresa[0].cdParametro" value="1">
<input type="hidden" name="paramEmpresa[0].tpParametro" value="3">

<input type="text" name="paramLogo[0].vlParametro" size="25" value="100" class="required">

<input type="hidden" name="paramEmpresa[1].cdParametro" value="1">
<input type="hidden" name="paramEmpresa[1].tpParametro" value="3">

<input type="text" name="paramEmpresa[1].vlParametro" size="25" value="100" class="required">


And now, how i´m trying to do it... but its fail..

DynaValidatorForm logoForm = (DynaValidatorForm) form;
String[] paramEmpresa= (String[])logoForm.get("paramEmpresa");

Somebody help me please? Is it possible to do it? I dont know how can i retrieve this values by my action..

Thanks for help !!
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