schema upload error

Hi there, now I just added a numberType in XSD file but error occurred.

I’m attaching my schema file include changing.

Can you please correct me?

[From]

<xsd:element name="subtotal" type="xsd:double"/>

[To]

----------------------------------------------------------------------------------------------

              <xsd:element minOccurs="0" name="subtotal" type="numberType"/>
                <xsd:simpleType name="numberType">
                  <xsd:restriction base="xsd:string">
                    <xsd:maxLength value="10"/>
                    <xsd:pattern value="([0-9]{1,3},([0-9]{3},)*[0-9]{3}|[0-9]+)(\.[0-9][0-9])?"/>
                  </xsd:restriction>
                </xsd:simpleType>

----------------------------------------------------------------------------------------------