Description of problem:
The Unset Checkbox that is present against Command line options in Alert Notification and the one present against Environment Variables under script is non affective. If I set a value and then click save and later try to unset by checking the check box, the old value is still retained and the check from the check box is not saved.

Version-Release number of selected component (if applicable):
jon-server-2.4.0.GA_QA Build# 43.

How reproducible:
Always

Steps to Reproduce:
1.Create a new alert definition.
2.Click on Edit for the Alert Notification.
3.On the Alert notification page, click on Add New. Select the Alert sender
type as Resource Operations.
4.Select the resource selection mode as Relative Resource. 
5.Click Save
6.Select Start search from as "JBoss AS Server"
7.Click Save.
8.Select Then Filter by as "Script"
9.Provide the name of the script that should be executed upon meeting the alert
condition.
10.Select operation name as "Execute Script"
11.Click Save.
12.Uncheck the Unset for Command line arguments and enter the value that needs
to be passed.
13.Click Save.
14.Now Check the Unset and click save.
  
Actual results:
Check the unset check box, the old value is still retained and the check from the check box is not saved.

Expected results:
Checking back the unset should unset the value.

Additional info: