I'm trying to make an applescript for an application called F.lux that clicks the menu item "Disable for an Hour" as indicated in the screenshot below:

The element path is indicated in the screenshot below:

Here is my code thus far:
tell application "System Events" tell process "Flux" click (menu bar item 1 of menu bar 2) click menu item "Disable for an hour" of menu 1 of menu bar item 1 of menu bar 2 end tell end tell
Everything compiles fine, however I keep getting the error message below when I attempt to run the script:
error "System Events got an error: Can’t get menu 1 of menu bar item 1 of menu bar 2 of process \"Flux\". Invalid index." number -1719 from menu 1 of menu bar item 1 of menu bar 2 of process "Flux"
Can someone pinpoint where I'm going wrong with this?