Agent Assignment.

I have custom workflow developed for pricing approval,

i have moved the workflow to the production environment, where i have noticed that even though the workflow is triggered the agent assignment is not getting take place, i have tried to go the attributes and tried to assign it as general task but the changes are not getting saved, so that in the task screen against the agent button the icon is not getting turned on to green.

please let me know how to solve this problem.

Thanks

bhargava