gcqmkm@uocmo:~$ xinput list-props 10
Device 'USB Optical Wheel Mouse':
	Device Enabled (150):	1
	Coordinate Transformation Matrix (152):	1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
	libinput Natural Scrolling Enabled (291):	0
	libinput Natural Scrolling Enabled Default (292):	0
	libinput Scroll Methods Available (293):	0, 0, 1
	libinput Scroll Method Enabled (294):	0, 0, 0
	libinput Scroll Method Enabled Default (295):	0, 0, 0
	libinput Button Scrolling Button (296):	2
	libinput Button Scrolling Button Default (297):	2
	libinput Middle Emulation Enabled (298):	0
	libinput Middle Emulation Enabled Default (299):	0
	libinput Accel Speed (300):	1.000000
	libinput Accel Speed Default (301):	0.000000
	libinput Accel Profiles Available (302):	1, 1
	libinput Accel Profile Enabled (303):	1, 0
	libinput Accel Profile Enabled Default (304):	1, 0
	libinput Left Handed Enabled (305):	0
	libinput Left Handed Enabled Default (306):	0
	libinput Send Events Modes Available (276):	1, 0
	libinput Send Events Mode Enabled (277):	0, 0
	libinput Send Events Mode Enabled Default (278):	0, 0
	Device Node (279):	"/dev/input/event5"
	Device Product ID (280):	7119, 2
	libinput Drag Lock Buttons (307):	<no items>
	libinput Horizontal Scroll Enabled (308):	1
gcqmkm@uocmo:~$ xinput set-prop "10" "Middle Emulation Enabled" 1
property 'Middle Emulation Enabled' doesn't exist, you need to specify its type and format