Populate summary field with data from Severity and Subject on defects
You can try this in bug_CanPost function.
if Bug_Fields("BG_SUBJECT").Value<>"" and Bug_Fields("BG_SEVERITY").Value<>"" then
Bug_Fields("BG_SUMMARY").Value=Bug_Fields("BG_SUBJECT").Value + " "+ Bug_Fields("BG_SEVERITY").Value
SInce summary is mandatory field, give some thing while submitting new defect and Once you submit and reopen the same defect, you can see subject and severity in summary