Figured out a solution. Download
Easy XML Parser from the Asset Store:
https://www.assetstore.unity3d.com/en/#!/content/6976It doesn't work straight out of the box for Unity 5, but with some tweaks I was able to get it working in Unity 5 and was able to pull XML data from a URL and then manipulate those values with an FSM in PlayMaker. Here's the things you need to tweak to fix Easy XML Parser for Unity 5:
1) Open the included "MyComponent.cs" script and rename the "public class MyComponent" to be the same name as the value you are seeking from your XML. For me, I wanted the "datavalues" from my XML document so I named my script "datavalues.cs" and re-named my public class to "public class datavalues"
2) Add "public" variables to the "MyComponent.cs" for any values you are trying to access within your respective class. In my case, the "public class datavalues" had 2 variables I wanted to access: "relay1" and "relay3". So I added these two variables to my "datavalues.cs" script by typing "public int relay1;" and "public int relay3;". That way when the datavalues.cs component script creates the instanced Game Object, it has my values already filled in.
3) You can then access these values by making a GameObject --> UI --> Text and naming it "GUI Text". Now your values will display in the text field of the "GUI Text" Game Object and you can pull those values into Variables using the Get Property action in PlayMaker.
The asset should really be priced at $5 since you have to manually fix it to work in Unity 5, but it IS fixable if you are willing to make the changes I pointed out above.
You really have no other choice for getting real-time URL based XML values to work on Android.