Is it possible to send XML Post Request
Hi,
I use this plugin to send HTTP GET and POST requests in JSON Format to a Yamaha RX-A880 AV Receiver. However some commands require to send an XML request as post, like this one:

<YAMAHA_AV rsp="GET" RC="0">
<System>
<Speaker_Preout>
<Pattern_1>
<Config>
<Front_Presence>
<Type>None</Type>
<Cross_Over>80 Hz</Cross_Over>
</Front_Presence>
</Config>
</Pattern_1>
</Speaker_Preout>
</System>
</YAMAHA_AV>

Is it possible to send that XML request via this plugin? If yes, how would the config look like since I already tried escaping the quotes or use single quotes. However it didn't work me.
