CAM_TRIGG_DIST Range is 0-1000m. I need Every statute mile (1609.34m) Possible?

I need a camera trigger event every 1609.34 meters but the CAM_TRIGG_DIST range is 0-1000m.

I tried entering 1609 to see if it would work and it does not.

How can I trigger the camera every mile?  Possible?

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