Rule

 <DecisionTable name="Calculator" processAll="False">
  <Declaration>
    <Define name="parcel weight" type="decimal" direction="In" />
    <Define name="delivery cost" type="decimal" direction="Out" />
  </Declaration>
  <Columns>
    <Condition name="Minimum Weight&#xD;&#xA;(kg)" expression="parcel weight &gt; $value" />
    <Condition name="Maximum Weight&#xD;&#xA;(kg)" expression="parcel weight &lt;= $value" />
    <Action name="Delivery Cost" expression="delivery cost" />
  </Columns>
  <Data>
    <Row>
      <Value>0</Value>
      <Value>22</Value>
      <Value>300</Value>
    </Row>
    <Row>
      <Value>22</Value>
      <Value>50</Value>
      <Value>550</Value>
    </Row>
    <Row>
      <Value>50</Value>
      <Value>110</Value>
      <Value>1200</Value>
    </Row>
    <Row>
      <Value>110</Value>
      <Value></Value>
      <Value>2000</Value>
    </Row>
  </Data>
</DecisionTable>