#i cannot read or write a image with any variable, how to fix this up? THX!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

$image = new Image::Magick;
$path = "C:\ImageMagick\$file";
$image->Read('$path');

$path = "C:\ImageMagick\$name\_thumb.$ext";
binmode STDOUT;
$image->Write('$path');