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Process variable resets to null
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created by <a href="http://community.jboss.org/people/pragiya">Prageeth Jayasinghe</a> in <i>jBPM</i> - <a href="http://community.jboss.org/message/619805#619805">View the full discussion</a>
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<div class="jive-rendered-content"><p>Hi all;</p><p>     I have a problem with jbpm 3.2.8. My jpdl file is shown below.</p><p><a href="http://community.jboss.org/servlet/JiveServlet/showImage/2-619805-16840/simple2.jpg"><span> http://community.jboss.org/servlet/JiveServlet/downloadImage/2-619805-16840/450-253/simple2.jpg </span></a></p><p>I have a process varible named "amount". The type of which is Integer. I set the value of it to 200 at the 'start'. </p><p>I print the value of it at the "node-entry" and "node-leave" events of the "Human1" human task node.</p><p>For the first time it prints 200 and everything is ok.</p><p>In my "node2" at node-leave event, I change the value of the variable as below.</p><blockquote class="jive-quote"><p>public void execute(ExecutionContext context) throws Exception {</p><p>    context.setVariable("amount", (Integer)context.getVariable("amount") - 60);</p><p>}</p></blockquote><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>So the new value of the varible "amount" should be 140. It seems ok.</p><p>(Forget about my decision node since it is used to end the process only if amount is less than zero.)</p><p>I again print the value of amount in "node1" script task and "Human1" node-entry action.</p><p>As usual it prints 140. So everything is ok up to now.</p><p>But when I print the value at the "node-leave" event of "Human1" human task it prints null.</p><p>I can't understand this behavior. Can't I use process variables in a loop?</p><p>Please help me. I am ready to supply more info if needed.Thanks in advance.</p></div>
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