[rules-users] Drools fusion example in 5.3.0

^ [Line: 56, Column: 28] : [Rule name='If the drop is between 6% and 8%, buy more shares'] Unable to Analyse Expression percent < -0.06: [Error: Comparison operation requires compatible types. Found class org.mvel2.util.MethodStub and class java.lang.Double] [Near : {... percent < -0.06 ....}] I download Drools 5.3.0 Final and try to run the Broker example that comes with the package. But I got the following error, what is wrong? ^ [Line: 56, Column: 28] : [Rule name='If the drop is between 6% and 8%, buy more shares'] Unable to Analyse Expression percent < -0.08: [Error: Comparison operation requires compatible types. Found class org.mvel2.util.MethodStub and class java.lang.Double] [Near : {... percent < -0.08 ....}] ^ [Line: 69, Column: 28] : [Rule name='If the drop is on more than 8%, sell shares'] Unable to Analyse Expression percent >= -0.06: [Error: Comparison operation requires compatible types. Found class org.mvel2.util.MethodStub and class java.lang.Double] [Near : {... percent >= -0.06 ....}] ^ [Line: 83, Column: 28] : [Rule name='If the drop is between 5% and 6%, do nothing'] Thanks Salina