I'd love to help you, but I don't have the time to create a complete capx for you regarding this matter and even if I did like I said above:
Without knowing more about what you are trying to achieve, it would be very hard to answer your question in a helpfull way..
If you want to use an array, you'd probably want something like a global variable to now the number of the text to display..
on swipe right/left
add/subtract 1 to global variable
set text to arrayAt(Global variable)
You could also opt for the dictionary object instead of the array and fill it with text seperated by tokens and use the tokenAt-expression.