Description of problem:
Tasks with ID higher than 1000 does not being completed and the error is shown in the Firefox java script console: uncaught exception: com.google.gwt.event.shared.UmbrellaException: Exception caught: For input string: "1,005"
Print screen attached.

Version-Release number of selected component (if applicable):
jbpms-6.0.2
jbpms-6.0.3
We tested in the versions above.

How reproducible, Steps to Reproduce:

I created a simple project with only one human task, deployed the project and started 1002 instances of it using the following script:

for i in `seq 0 1001`
do
curl -X POST -u 'user:password' http://localhost:8080/business-central/rest/runtime/

/process/

/start
done

In my case curl is as follows:

curl -X POST -u 'jesuino:redhat2014!' http://localhost:8080/business-central/rest/runtime/com.redhat.gss.bpms:test-lots-ht:1.0/process/test-lots-ht.simple-ht-process/start

You need to replace user, password, deploymentId and processID with the parameters of your environment. Make use user is an actor of the human task.

When when I go to Tasks -> Tasks List, I see more than 1000 tasks tasks waiting to be completed. When I click on a task with more ID bigger than 1000 start it and and click in complete, I can see the mentioned error in the javascript console.

Actual results:
In the business-central at the Task List, the task should be completed but instead the error is shown in the javascript console:
com.google.gwt.event.shared.UmbrellaException: Exception caught: For input string: "1,005"

Expected results:
Task should be completed.

Additional info:
As workaround we can use this curl -X POST -u 'user:password' http://localhost:8080/business-central/rest/task/taskId/complete

But if the task receive parameters, this workaround will not work.