Castor generate BigDecimal type for integer type in xsd

I use xsd schema like :

<xsd:complexType name="TrxIdRs_Type">
    <xsd:simpleContent>
        <xsd:extension base="xsd:int">
            <xsd:attribute ref="trxStatusCode" use="required"/>
            <xsd:attribute ref="trxStatusDescr" use="required"/>
        </xsd:extension>
    </xsd:simpleContent>
</xsd:complexType>

meaning XML like :

<TrxIdRs trxStatusCode="1" trxStatusDescr="descr">
    111000111
</TrxIdRs>

But Castor generate only BigDecimal type for this schema :

public abstract class TrxIdRs_Type implements java.io.Serializable {
  //--------------------------/
 //- Class/Member Variables -/
//--------------------------/
/**
 * internal content storage
 */
private java.math.BigDecimal _content;
/**
 * Field _trxStatusCode.
 */
private java.lang.Integer _trxStatusCode;

Is there any other variants to write xsd or configure castor to have primitive type in generated bean?