How to bind Alt+Shift+, and Alt+Shift+. to scroll_home/scroll_end ? (Emacs like binding)

[zw963]

Alt + Shift + following screenshot two keys.

i tried a lot for this, but none of them works.

Alt+Shift+comma,
Alt+greater,
Alt+XKB_KEY_greater

Alt+Shift+dot
Alt+less
...

Thank you.

[zw963]

Sorry for confusing again, the answer is:

map alt+shift+, scroll_home
map alt+shift+. scroll_end

it not work because my xkeysnail app map key to another key system globally.