utf8::downgrade( my $bytes_off = '' );
                        $bytes_off .= chr($coords) for 0..255;
                        utf8::upgrade( my $bytes_on = '' );
                        $bytes_on .= chr($coords) for 0..255;

                        # Downgrade variable on output to avoid false positive.
                        utf8::downgrade( my $from_off = $bytes_off );
                        utf8::downgrade( my $from_on  = $bytes_on );
                        print("bytes are ", ($from_off eq $from_on ? 'same' : 'diff'), "\n");

                        $sftp->write( $waytemp, $coords);