You've set up two different keys to do the same thing. Scrolllock toggles broadcasting and Pause toggles broadcasting.
I'm really not sure what you're trying to do. If Scrolllock toggles the keys to broadcast and shows a light when it's on, then why do you need another key to toggle broadcasting?
If what you're trying to do is set it up so that when scrolllock is on, pause toggles broadcasting, but if scrolllock is off, pause does nothing or something else, then you would do
<hotkey ScrollLockOn Pause>
<sendpc local>
<ToggleHotkeys>
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