Net.Sf.Jasperreports.Engine.JRException: Errors were encountered when compiling report expressions class file: 1.

Question

Net.Sf.Jasperreports.Engine.JRException: Errors were encountered when compiling report expressions class file: 1.

Cannot invoke add(double) on the primitive type double
value = new Double( (((java.lang.Double)parameter_conversionRate.getValue()).doubleValue()) > 0 ? (((java.lang.String)parameter_currencySymbol.getValue())+" "+ String.format("%.2f",new Double( ((java.math.BigDecimal)field_amount_due.getValue()).doubleValue() .add( ((java.math.BigDecimal)field_balance_due.getValue()).doubleValue()))* ((java.lang.Double)parameter_conversionRate.getValue()).doubleValue())) : ( ((java.lang.String)parameter_currencySymbol.getValue())+" "+String.format("%.2f",((java.math.BigDecimal)field_amount_due.getValue())+((java.math.BigDecimal)field_balance_due.getValue())))); //$JR_EXPR_ID=40$
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2. The operator + is undefined for the argument type(s) java.math.BigDecimal, java.math.BigDecimal
value = new Double( (((java.lang.Double)parameter_conversionRate.getValue()).doubleValue()) > 0 ? (((java.lang.String)parameter_currencySymbol.getValue())+" "+ String.format("%.2f",new Double( ((java.math.BigDecimal)field_amount_due.getValue()).doubleValue() .add( ((java.math.BigDecimal)field_balance_due.getValue()).doubleValue()))* ((java.lang.Double)parameter_conversionRate.getValue()).doubleValue())) : ( ((java.lang.String)parameter_currencySymbol.getValue())+" "+String.format("%.2f",((java.math.BigDecimal)field_amount_due.getValue())+((java.math.BigDecimal)field_balance_due.getValue())))); //$JR_EXPR_ID=40$
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3. Cannot invoke add(double) on the primitive type double
value = new Double( (((java.lang.Double)parameter_conversionRate.getValue()).doubleValue()) > 0 ? (((java.lang.String)parameter_currencySymbol.getValue())+" "+ String.format("%.2f",new Double( ((java.math.BigDecimal)field_amount_due.getOldValue()).doubleValue() .add( ((java.math.BigDecimal)field_balance_due.getOldValue()).doubleValue()))* ((java.lang.Double)parameter_conversionRate.getValue()).doubleValue())) : ( ((java.lang.String)parameter_currencySymbol.getValue())+" "+String.format("%.2f",((java.math.BigDecimal)field_amount_due.getOldValue())+((java.math.BigDecimal)field_balance_due.getOldValue())))); //$JR_EXPR_ID=40$
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4. The operator + is undefined for the argument type(s) java.math.BigDecimal, java.math.BigDecimal