Script to find staled NFS Mount Points in Linux through Perl

I found a script on the internet that kind of meets my needs of finding a script to determine if a linux machine has a staled NFS Mount Point.  I tweeked the script a little bit to fit my environment and I have came up with the below script.  I was successfully able to run the script locally on the machine but when I use SAM to run the script, I get

Get Output Failed:

Can't identify dynamic column definitions from script output. Please, check if script output has properly formatted unique identifiers.

Has anyone also tried creating this script and found a better way to determine if an NFS mount point is stalled, or if anyone with better perl scripting experience in SAM can point out my mistake, I would greatly appreciate it.  Thanks in advance.

#!/usr/bin/perl

# Usage: check_nfs_client

# Description:

# This script determines whether there

# are stale NFS mounts on the host.

open FD,">/tmp/nfsCheck";

print FD "#!/bin/bash\ncd \$1 || { exit 0; }\nexit 0;\n";

close FD;

$dirs = `mount | grep " type nfs " | awk '{print \$3}'`;

foreach $mtpt (split(/\n/,$dirs)) {

system("/tmp/nfsCheck $mtpt &");

system("sleep 0.3");

chomp($proc = `ps -ef | grep nfsCheck | grep -v grep | awk '{print \$2}'`);

if ("$proc" ne "") {

print "NFS CRITICAL: Stale NFS mount point - $mtpt.\n";

system("kill -9 $proc");

exit 1;

}

}

print "NFS OK: All mounts available.\n";

exit 0;