How can I sum pay_price
value in group footer:
<variable name="total" class="java.lang.Integer" calculation="Sum">
<variableExpression><![CDATA[$F{pay_price}]]></variableExpression>
</variable>
but its suming all value-s.
Try adding the resetGroup
<variable name="total" class="java.lang.Integer" resetType="Group" resetGroup="myGroup" calculation="Sum">
<variableExpression><![CDATA[$F{pay_price}]]></variableExpression>
</variable>