Re: [rules-users] Local Variable

Another approach would be to use a transient Fact for the "local variable":- rule "1" when #some condition01 then insertLogical( new MyFact(200) ); end rule "2" when #some condition02 then insertLogical( new MyFact(300) ); end rule "3" when #some condition03 MyFact( $v : value ) then emp.salary=$v+2000 end Of course if Rule "1" and Rule "2" both inserted an instance of MyFact Rule "3" would activate twice. This can be safe-guarded against by checking for the non-existence of MyFact:- rule "1" when #some condition01 not MyFact() then insertLogical( new MyFact(200) ); end rule "2" when #some condition02 not MyFact() then insertLogical( new MyFact(300) ); end rule "3" when #some condition03 MyFact( $v : value ) then emp.salary=$v+2000 end If however you then needed this to work on, for example different employees, you'd need to associated MyFact to the employee:- rule "1" when $e : Employee( position == "grunt" ) not MyFact( employee == $e ) then insertLogical( new MyFact(200, $e) ); end rule "2" when $e : Employee( position == "manager" ) not MyFact( employee == $e ) then insertLogical( new MyFact(300) ); end rule "3" when $e : Employee( position == "grunt" ) MyFact( $v : value, employee == $e ) then modify($e) { setSalary( $v+2000) } end On 5 October 2012 12:46, joy <Kripa_M01(a)infosys.com&gt; wrote: