Dimming chase on Applescript
Only because you asked... The code below is an example of using a repeat statement and delay commands with your code.

That said, I do not believe it is going to give you the desired results because while the events will trigger in code nonetheless they'll probably not be processed at the hardware level. (It doesn't on my system.)

You can change the numeric value in the repeat statement to suite your needs. The value is an integer, as in repeat integer [times].

The delay command shown in decimal seconds as in delay number being the number of seconds to delay. The number may be fractional, such as 0.5 to delay half a second.



repeat 3 times
    repeat 10 times
        tell application "System Events"
            key code 107
        end tell
        delay (0.1)
    end repeat
    repeat 10 times
        tell application "System Events"
            key code 113
        end tell
        delay (0.1)
    end repeat
end repeat