Applescript: on clicking Menu Bar item via gui script

This worked for me, but there is a delay of about 5 seconds after the first click command.

tell application "System Events" to tell process "Flux"
    tell menu bar item 1 of menu bar 2
        click
        click menu item "Disable for an hour" of menu 1
    end tell
end tell

One workaround is to use ignoring application responses and terminate System Events after the click command:

ignoring application responses
    tell application "System Events" to tell process "Flux"
        click menu bar item 1 of menu bar 2
    end tell
end ignoring
do shell script "killall System\\ Events"
delay 0.1
tell application "System Events" to tell process "Flux"
    tell menu bar item 1 of menu bar 2
        click menu item "Disable for an hour" of menu 1
    end tell
end tell