Primo 2 speed camera repeat waring

[simian]

Hey,
I am using Primo 2 with Nuance voice, I have been able to use the sys.txt to change the spoken repeat waring to what I want it to say for speed cameras but I am not sure how to change how often the repeat warning is said as I approach a speed camera, any ideas as to how I can make it repeat more often as I approach ?

; S P E E D C A M - C A T : 0
[speedcam_category:0]
activated_spoken_type=speech
activated_speech="Speed camera ahead."

approach_beep_distances=150
approach_beep_spoken_type=speech
approach_beep_speech="Careful." <---I changed this line for the repeat waring

overspeed_spoken_type=speech
overspeed_speech="Reduce your speed."
overspeed_min_speech_repeat_delay=10

min_frc=-1
use_road_speedlimit=1

[applle]

OK