I'm not sure if the title is worded clearly. I'll try to explain.
I want to be able to trigger alerts within my app by reading a file hosted on a server. So, I obviously have no idea how this would be implemented but I'm hoping it'd work like this...
Let's say I want to inform people playing my game of a new app I am releasing, or tell them that there is an update available. To do this I will first compile my game with a hidden layer with a text box on there. Then from my computer I can type up the text I want to be displayed into a text file or wherever it needs to be and upload it to my server. Then everytime the app loads it checks to see if this txt file or whatever it may be is present and if so it then displays this hidden layer and sets a text box to the contents I uploaded from my computer.
I'd like to think it would be as simple as the below, although I'm sure it won't be lol
On start of layout
Check is file "alert.txt" at "http://www.whatever.com" present
File "alert.txt" is available
Set layer "alert" to visible
Set Text to contents of "alert.txt"