Per quale motivo su questo xml non funziona?
Cosa c'è di diverso?

Si può selezionare il tag <field> con attributo name='group', cercare solo tra gli <option> in esso contenuti quello col "value" voluto e poi modificarlo?

codice:
<?xml version="1.0" encoding="utf-8"?>
<form>
	<fieldset>

		<field 	name="id" type="text" default="0" label="..." description="..." 
				readonly="true" class="readonly"/> 

		<field 	name="position" type="text" size="40" class="inputbox" 
				label="..." description="..." 
				required="true" 
				filter="safehtml"/> 

		<field 	name="group" type="list" class="inputbox" 
				label="..." description="..." 
				required="true" size="1" default="1">
				<option value="1">Calcola il tuo preventivo</option>
				<option value="2">Copertina</option>
				<option value="3">Interno</option>
				<option value="4">Allestimento</option>
				<option value="5">Servizi</option>
				<option value="6">Consegna</option>
		
		</field> 

		<field 	name="type" type="list" class="inputbox" 
				label="..." description="..." 
				required="true" size="1" default="1">
				<option value="text">Text</option>
				<option value="select">Select</option>
				<option value="radio">Radio</option>
		</field> 

		<field 	name="name" type="text" size="40" class="inputbox" 
				label="..." description="..." 
				required="true" 
				filter="safehtml"/> 

		<field 	name="label" type="text" size="40" class="inputbox" 
				label="..." description="..." 
				required="true" 
				filter="safehtml"/> 

		<field 	name="size" type="text" size="40" class="inputbox" 
				label="..." description="..." 
				required="true" 
				filter="safehtml"/> 

		<field 	name="state" type="list" 
				label="..." description="..." 
				class="inputbox" size="1" default="1">
				<option value="1">JPUBLISHED</option>
				<option value="0">JUNPUBLISHED</option>
		</field> 

		<field name="checked_out" type="hidden" filter="unset"/>
		<field name="checked_out_time" type="hidden" filter="unset"/>

	</fieldset>
</form>