Gateway Serial Module writeBytes hex

Dang you are fast.

My apologies for my ignorance. I had a feeling I was murdering the requirements for the array.

Would you be able to walk me through constructing a simple 2-byte array that can handle unsigned values and is a valid argument for system.serial.writeBytes ?
So far I've been taking guidance from these forum posts but am lost as how to construct the array:
https://forum.inductiveautomation.com/t/serial-module-possible-error/5920/11
https://forum.inductiveautomation.com/t/solved-get-nmea-sentence-system-serial/48783

Again, my apologies for the ignorance. Any help is appreciated. Thank you!