We need to be able to control the value(s) that are displayed for the IssueType field based on the value entered in a custom field. This needs to be controlled prior to the user selecting the Create button (in other words, not fire after the issue is created and simply updating the field). This is due to a bug in JIRA that will not let the workflow for the IssueType get updated if the IssueType field gets updated by script.