I keep getting the following error from P::RD:

Can't call method "file" on an undefined value at ../scan_test.plx line 46, <> line 1.

file is my startup rule. I test my input text and it is defined and contains the data I expect.

As long as I am just printing out the tokens that have been extracted, everything works OK. But as soon as I try to save some of the data for later use, the grammar breaks down. Here's the entire grammar (yes, P::RD is overkill, but I figured it would be quick and easy to get running):
my $grammar = q{
        file: hdr body ftr
        hdr: /^HDR.*\\n/ {
            print "HDR: $item[1]";
            }
        body: batch(s)
        ftr: /^FTR.*\\n/ 
        batch: bathdr tran(s) batftr
        bathdr: /^BHD.*\\n/ {
#            $str1= substr($item[1],30,3)
            1;
            }
        tran: TR1 TR2
        batftr: /^BFT.*\\n/ 
        TR1: /^TR1.*\\n/ {
#            $str4= substr($item[1],35,8);
#            $str2= substr($item[1],122,5);    
            1;
            }
        TR2: /^TR2.*\\n/ {
#            $str3= substr($item[1],103,2);
#            print "DATA: $str1, $str2, $str3, $str4\\n";
            1;
            }
        };

[download]
If I run the script as is, it works. If I uncomment any one of the commented actions above, it fails with the 'undefined value' error.
Any help would be appreciated. So far, re-reading the perldoc and the P::RD FAQ haven't helped.

Thanks...

"The only things that are difficult are those that I know nothing about" -- Mark Twain

janitored by ybiC: Fix typo in nodetitle - s/Prarse/Parse/

In reply to Parse::RecDescent startup/input error by JESii

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