[rules-users] "==" operator does not work on float and double type

Hi, All: My drl file is like below: package org.drools.examples; import org.drools.examples.HelloWorldExample.Message; rule "check deep int" dialect "java" when m:Message( sec.fir.d == "99.9" ) then System.out.println( "===check deep double ok===" ); end I find that "==" operator does not work well on double and float type. This condition can not be satisfied. If I change the condition to sec.fir.d < "100" or sec.fir.d > "99.8", it works well. Is it a bug? I attach my test code. And I add below jars into classpath: antlr-runtime-3.0.jar core-3.2.3.v_686_R32x.jar drools-compiler-4.0.7.jar drools-core-4.0.7.jar drools-decisiontables-4.0.7.jar drools-jsr94-4.0.7.jar janino-2.5.10.jar jsr94-1.1.jar mvel-1.3.12-java1.5.0.jar Can anyone kindly help me? Thanks! - Zeke