I want to press my computer keyboard keys "1" and "2" and pack these key presses into a short list using [pack f f], as in example below.

I also want the list to change in real time so when only "1" is pressed the list reads 1 0 and when only "2" is pressed the list reads 0 2. This patch does this using ]bondo 2] but when I press both computer keys together my list doesn't output "1 2" in the console. Instead it displays a very quick:
1 0
0 2
What am I missed to change the output to 1 2 in a list when both keys are pressed together? Patch included

list problem.pd

I think you need to keep track of which keys are kept pressed. There's no way to press two keys together, the computer is faster than your hands and it detects two separate key presses. If you use something like [keyup] or maybe [hid] (I think it's from the HID library, can't remember exactly), to determine than 1 is still pressed when you press 2, or the other way around, then you'll be able to get the output you want.

Try this: