Hello monks !!!

I am working on some perl project where I am suppose to rsh the remote file whose name is stored in the perl variable.I am not been able to invoke that rsh command with variable name.Instead if I use variable value like in below case if I used VMWARE instead of $platform in the rsh command then the program works fine else it take whole platform_poll_pkg as a variable

$platform = "VMWARE";
my $platform_poll = `rsh lcla238 -l root find /nightly_results/today/$
+platform_poll_pkg.log`; 
if(($platform_poll) && (`rsh lcla238 -l root cat /nightly_results/toda
+y/$platform_poll_pkg.log` =~ /All done/)){
print "Hello\n";
}else{
    print"file doesnot exist !!!\n"; 
}
[download]

If anybody knows how to deal with this issue then kiundly let me know. Thanks in advance !!!!