Thanks here is how I solved my case : 
#!"C:\xampp\perl\bin\perl.exe"
use strict;
use warnings;
use CGI;

my $query = CGI->new ;
my $dir = "C:/Users/41786/Documents/recordz1";

showImage();

sub showImage {
    my $call = shift || '';
    my  $image = $query->param('article');
    my  $URL = "../upload/$image.jpg";
    my $ARTICLE_URL = {};
    my $content = "";
    if (defined $image) {
        open (FILE, "<$dir/show_test.html") or die "cannot open file $
+dir/show_test.html";
        while (<FILE>) {
            s/\$ARTICLE_URL/$URL/g;
            $content .= $_;
        }
    }
    print "Content-Type: text/html\n\n";     
    print $content;
    close (FILE);    
    return 1;
}

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In reply to Re^2: Unescaped left brace in regex by *alexandre*
in thread Unescaped left brace in regex by *alexandre*

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