OK. Perhaps if you provide a more rigorous explanation of what you hope to do, someone might be able to provide specific advice.
The example sends directly the coordinates (longitude, latitude) for it to be automatically marked on a map. Did you try the example? You need to compile the aia; load the compiled app to two different cell phones or tablets. If you run the app on the two devices, the map made on your device will be visible on the other device. You want to do something different? What?
You are hiding critical Blocks in your savePresentLocation Procedure. When you use
locationNow, you create a List latitude longitude . What you do with it determines how you use that information to be spotted as a Marker on a Map component.