Hi,
I was trying to substract these two values:

my $n1 = '-933';
my $n2 = '-1039';

my $dif = $n1 - $n2;
[download]

In print Dumper for "n1" and "n2" looks like this:

$VAR1 = '-933';
$VAR1 = '-1039';
[download]

But how come when I substracted them, they give:

Argument "^\-933" isn't numeric in subtraction (-) at mycode.pl line 1
+15.
Argument "^\-1039" isn't numeric in subtraction (-) at mycode.pl line 
+115.
[download]

Where the "$dif" value is printed as 0. How can I overcome this problem?

update: Here is some additional context. Earlier, $n1 and $n2 was obtained from this step:

my $some_string = "0,-933";
my ($id1,$n1) = split(",",$some_string);
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And my Perl version is:

This is perl, v5.8.5 built for i386-linux-thread-multi
[download]

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