Hi I am fairly new to Outsystems and still learning my way around.

I have built an app and currently have stored a pdf as binary data in an Entity, I am trying to print the PDF to a Bluetooth thermal printer, I have tried a couple of ways to get this to work and it just wont. 

I have the Bluetooth Serial Plugin but whenever I try and do anything with it I get a "bluetoothSerial is not defined" error.

I am open to any ideas on how to either fix this or another way to get this working, any help will be really appreciated. 

The device is Zebra TC21 on Android 11

I have also tried the Sample app and it just stays on searching and does not discover any devices.