see: https://github.com/TheRealMarcusChiu/apple-script-auto-toggle-pointer-actions
tell application "System Preferences"
activate
reveal anchor "Mouse" of pane id "com.apple.preference.universalaccess"
-- get every anchor of current pane
end tell
tell application "System Events"
tell process "System Preferences"
repeat until window "Accessibility" exists
end repeat
click radio button "Alternate Control Methods" of tab group 1 of group 1 of window "Accessibility"
click checkbox "Enable alternate pointer actions" of tab group 1 of group 1 of window "Accessibility"
try
click UI element "OK" of sheet 1 of window "Accessibility"
on error errMsg
-- display dialog "ERROR: " & errMsg
end try
end tell
keystroke "h" using command down
end tell