orms:model id="autocomplete-model">
                        <xforms:instance id="autocomplete-instance">
                            <autocomplete>
                                <readonly>false</readonly>
                                <textfield-value></textfield-value>
                            </autocomplete>
                        </xforms:instance>
                        <xforms:bind ref="textfield-value" readonly="../readonly = 'true'"></xforms:bind>
                    </xforms:model>
        