Converting code between magnetometers.

I found a project online that uses a hmc5833l that I am attempting to recreate with a mag3110 from sparkfun. The link to the project I am copying is Live Wi-Fi Water Meter Reader .
I can't seem to get the values to relate to the water meter spinning. When I put my phone up to the meter using a sensor application to utilize the onboard magnetometer I see the values changing on certain axis' but through the code output I cant seem to get a value that would notify that the magnetic field is changing.

Any help would be greatly appreciated.
Thanks

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