GPS value option is greyed out

I’m trying to send GPS coordinates to Cayenne, and right now I am able to get it to send GPS coordinates via different channels, however I am using the data type Proximity with the units in meters. I think this is causing problems because the value on Cayenne is very different from the one that is actually collected. For example the coordinate 33.39579010009765625000 would be put into Cayenne as 33.395999908447

I originally thought that this might have just been an error due to rounding but it doesn’t appear to be so.

I then decided to look into the custom widgets and there does seem to be a GPS option, but it is greyed out and unclickable. I was wondering how access it, or if there is another data type & units that would work in my case