Hi sergey zagrebin,
Kindly try the following. Lets take the example from the trap you are getting the enum 1 and 2. Let assume '1' means ok and '2' means Failed.
By using transform you are getting enum to a variable 'x'. eg: x=getattr(evt,'varbindname'). Now create a python dictionary as follows
Status={1:'ok',2 : 'Failed'}
Value=Status[x] #Where x is the value if the enum that is send from trap and captured inside transform.
Hope it helps
Thanks
Sandeep