Net::OpenSSH can do all the quoting for you:

($output, $errput) = $ssh->capture('blah', 'blah', $object, 'blah', 'b
+lah');
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Or if you want to keep the command template as it is:

my $quoted_object = $ssh->shell_quote($object);
$cmd = "blah blah $quoted_object blah blah";
($output, $errput) = $ssh->capture2($cmd);
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Read the Shell quoting section on the module documentation.