can't read the 2nd input file

[perlman]

Hi, I'm failling to read the 2nd input file in citrix-enum-apps-xml-PORT-STATE-SERVICE+IP-disk.pl in the while loop line 11
I have tried to replace that line with
<code>
while (<F1> && $line_stop++ < $line_no) { s/\r\n//;print $_; }
</code>
but nothing comes out

what's wrong ?

Remember I have already one input file openned F0

thank's