Getting error while loading MultiPeriod dataload in FDMEE using Jython Scripting

Hi Team, Iam trying to load MultiPeriod data-load text file to Target HFM application through FDMEE using jython scripting. I used Import and AftrImp (Event) script to pull multi period data load. I have done all the required settings in fdmee. when we try to Execute the Data Load Rule we are facing the error.

I tried searching doc in oracle internal sites found a doc "Loading mutilperiod dataload for planning application".

There they told to used Import script as follows:                   

def amount(strfield, strrecord):

amt_record = strrecord.split(",")

amt_year = amt_record[6].strip()

amt_period = amt_record[11].strip()
return (amt_period + "-" + amt_year[-2:])