Modify.java

    private String rewriteConsequenceBlock(String consequence) {
        int modifyPos = StringUtils.indexOfOutOfQuotes(consequence, "modify");
        if (modifyPos < 0) {
            return consequence;
        }

        int lastCopiedEnd = 0;
        StringBuilder sb = new StringBuilder();
        sb.append(consequence.substring(lastCopiedEnd, modifyPos));
        lastCopiedEnd = modifyPos + 1;

        for (; modifyPos >= 0; modifyPos = StringUtils.indexOfOutOfQuotes(consequence, "modify", modifyPos+6)) {
            int declStart = consequence.indexOf('(', modifyPos + 6);
            int declEnd = declStart > 0 && consequence.indexOf(')', declStart + 1) >= 0 ? StringUtils.findEndOfMethodArgsIndex(consequence, declStart) : -1;
            if (declEnd < 0) {
                continue;
            }
            String decl = consequence.substring(declStart + 1, declEnd).trim();
            int blockStart = consequence.indexOf('{', declEnd + 1);
            int blockEnd = consequence.indexOf('}', blockStart + 1);
            if (blockEnd < 0) {
                continue;
            }

            if (lastCopiedEnd < modifyPos) {
                sb.append(consequence.substring(lastCopiedEnd, modifyPos));
            }

            Expression declAsExpr = JavaParser.parseExpression( decl );
            if (decl.indexOf( '(' ) >= 0) {
                declAsExpr = new EnclosedExpr( declAsExpr );
            }
            String originalBlock = consequence.substring(blockStart + 1, blockEnd).trim();
            BlockStmt modifyBlock = JavaParser.parseBlock("{" + originalBlock + ";}");
            List<MethodCallExpr> originalMethodCalls = modifyBlock.findAll(MethodCallExpr.class);
            for (MethodCallExpr mc : originalMethodCalls) {
                Expression mcWithScope = org.drools.modelcompiler.builder.generator.DrlxParseUtil.prepend(declAsExpr, mc);
                modifyBlock.replace(mc, mcWithScope);
            }
            for (Statement n : modifyBlock.getStatements()) {
                if (!(n instanceof EmptyStmt)) {
                    sb.append(n);
                }
            }

            sb.append("update(").append(decl).append(");\n");
            lastCopiedEnd = blockEnd + 1;
            modifyPos = lastCopiedEnd - 6;
        }

        if (lastCopiedEnd < consequence.length()) {
            sb.append(consequence.substring(lastCopiedEnd));
        }

        return sb.toString();
    }