Expression Designer syntax error, Why?

[lander (CAD CAM CNC)]

@HS_Kim

Sounds like you are suffering from one of the most recurrent questions.

K, and I’m not seeing the solution other than “don’t use draw full names, it’s just there to trick you”:

Expression editor giving errors

It’s a known issue when you are running GH in “Draw Full Names” mode Change input variable name from Variable x --> x, Variable y --> y.

So, why have the option? Or how to use said option?