Migrated rules from using community based Drools libraries to enterprise BRMS version causes Predicate must be boolean expression ERROR

Solution Unverified - Updated -

Issue

  • After migrating rules from using community based Drools libraries to enterprise BRMS version causes Predicate must be boolean expression ERROR as shown below.
Predicate 'dateUtil.getYear(ruleBean.getBillDate()) >= dateUtil.getYear(ruleBean.getPayDate())' must be a Boolean expression
[Line: 30, Column: 32] : [Rule name='DefaulterPaymentRule']

How to fix these issues?

Environment

  • Red Hat JBoss BRMS (BRMS)
    • 5.3.x

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