When you are developing and testing workflows in UCM the Update Event of a step in a workflow can be your worst enemy. The update event is fired off roughly every sixty minutes in a standard configuration of UCM. Any IdocScript you create in your Update event of your step then might have to wait as much as sixty minutes to execute. This makes testing these scripts difficult. Sure, in some cases you can use the built in test harness. However, this little configuration will be a big boost:
Adding this configuration variable to you <install>/config/config.cfg or through the Admin Server under General Configuration and restarting your content server will give you a big development/test boost. This reduced the period from sixty minutes to five minutes.
Happy workflow debugging!