Compound assignment operation like BigDecimal_type_property += Numeric_value causes compilation errors in executable model. --------------------------------------------------------------------------------------------------------------------------- Key: DROOLS-5894 URL: https://issues.redhat.com/browse/DROOLS-5894 Project: Drools Issue Type: Bug Components: executable model Reporter: Luca Molteni Assignee: Luca Molteni Priority: Major Labels: support Compiling a rule like (*1) which is described in MVEL dialect and uses a compound assignment operation like _BigDecimal_type_property_ += _Numeric_value_, for example, - $bus.weight += 1000; ..... (6a) or - num = 100; $bus.weight += num; ..... (6b) with executable rule models enabled, errors like (*2) occur. $bus.weight is a BigDecimal type property. This issue occurs in the case of using the other basic operations '-=', '*=', '/=' as well as '+='. (*1) {noformat} package com.example.reproducer import com.example.reproducer.Bus dialect "mvel" rule "bus6a" when $bus : Bus() then $bus.weight += 1000; ..... (6a) System.out.println("***** " + $bus + ", weight = " + $bus.weight); update($bus); end {noformat} (*2) {noformat} [ERROR] /work2/cases/02801729/reproducer_02801729_6a_6b/target/generated-sources/drools-model-compiler/main/java/com/example/reproducer/P86/LambdaConsequence86B94E0EB0387F8D724213EF209CA726.java:[19,13] weight has private access in com.example.reproducer.Bus [ERROR] /work2/cases/02801729/reproducer_02801729_6a_6b/target/generated-sources/drools-model-compiler/main/java/com/example/reproducer/P86/LambdaConsequence86B94E0EB0387F8D724213EF209CA726.java:[19,21] bad operand types for binary operator '+' first type: java.math.BigDecimal second type: int {noformat}