Donald Walters [http://community.jboss.org/people/dondragon2] created the discussion "Re: Transition rule EL Expression fails" To view the discussion, visit: http://community.jboss.org/message/564661#564661 -------------------------------------------------------------- I am using version 4.4 The issue is in the ExpressionCondition class public boolean evaluate(OpenExecution execution) {         Object result = Expression.create(expression, language).evaluate();         if (result instanceof Boolean) {             return ((Boolean) result).booleanValue();         }              throw new JbpmException("expression condition '" + expression + "' did not return a boolean: " + result);     } Apparently the value that is returned by the Expression.create is a String " true " which would fail based on the conditions above. I had to modify the code to reflect the following. public boolean evaluate(OpenExecution execution) {         Object result = Expression.create(expression, language).evaluate();         if (result instanceof Boolean) {             return ((Boolean) result).booleanValue();         }         if (result instanceof String) {             if(result == null)                 return false;             return Boolean.valueOf(((String) result).trim());         }         throw new JbpmException("expression condition '" + expression + "' did not return a boolean: " + result);     } After doing that it is evaluated properly. This an issue that needs to resolved in the official distribution. public boolean evaluate(OpenExecution execution) {         Object result = Expression.create(expression, language).evaluate();         if (result instanceof Boolean) {             return ((Boolean) result).booleanValue();         }         if (result instanceof String) {             if(result == null)                 return false;             return Boolean.valueOf(((String) result).trim());         }         throw new JbpmException("expression condition '" + expression + "' did not return a boolean: " + result);     } -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/564661#564661] Start a new discussion in jBPM at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]