<DataSource ID="UploadItem" inheritsFrom="TextItem" Constructor="UploadItem">
    <fields>
        <field name="defaultValue" inapplicable="true"/>
   		<field name="length" inapplicable="true"/>                
        <field name="defaultDynamicValue" inapplicable="true"/>
        <field name="formula" inapplicable="true" />
        <field name="textFormula" inapplicable="true" />
    </fields>
</DataSource>

