for(my $c = 0; $c <= $num_elements; $c++)
	{
		if($hash{$filter[$c]->[4]} eq $filter_data)
		{
			if (exists($hash{$filter[$c]->[0]}))
			{
				if($hash{$filter[$c]->[3]} eq $numerical_value)
				{
#					#process filtering for numerical value
					if ((eval "$hash{$filter[$c]->[0]} $filter[$c]->[1] $filter[$c]->[2]"))
					{
						print OUTFILE $line, "\n";
					}
				}
			}
			else
			{
				print "COLUMN NAME DOES NOT EXIST. CHECK FILTER FILE FOR ANY POSSIBLE ERRORS AND RE-RUN PROGRAM. PROGRAM WILL NOW TERMINATE.", "\n";
				exit 0;
			}
		}
	}