accessing pig params inside a UDF

[Kochis, Allan]

I call a pig script 
 
pig -param  DATE=$date ~/bin/script.pig
 
inside of the pig script I filter records thru a perl udf
 

DEFINE parser    `parser.pl`    SHIP ( 'parser.pl'  );
 
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raw_records = LOAD '/logs/$DATE';
parsed_recs = STREAM raw_records THROUGH parser;
 
A simple question "How do I access the date parameter inside of the perl
script?"
 
Thanks
 
Allan.