How do I code picking random variables to then compare it to an array?

Wait, you want a random row and a random column from an array and not have it = 0?

Use a while statement.

While found = false
 x=floor(random(1,10))
 y=floor(random(1,10))
 array.at(x,y)) <> 0
 else
 found = true
 stop loop

While 
 x=floor(random(1,10))
 y=floor(random(1,10))
 array.at(x,y)) <> 0
 else
 stop loop

Thank you very much for the response! I've tried to implement that while loop, but no matter how I put it in, it tends to freeze the game on load-up or when trying to execute the while loop itself.

The first is the code by itself, the others are the code attached to the button you're meant to press to then send you to the selected level.

Am I just doing it wrong?

*EDIT* The first image isn't showing for some reason for me. Sorry.

I believe your else is in the wrong spot. Put it under the value at check. If you look at the lines, it's connected to the tap gesture and the value at check does nothing if it's true or false.

Here's an example of one of mine.

Notice the boolean check is directly under the for loop, not the while.

This one runs a bunch of for loops. If I need to keep repeating those loops, I set the found variable to true inside that for loop. That way, it keeps looping and looping until it doesn't find things I need to change and then, with found = false, exits the while.

Again, Ashley says I'm doing it wrong, but hey, it works and I understand it!

So this is what the answer eventually was.

I'm not sure what was going on with Random, but it wouldn't select (10,1) in the array. Also, other variations of this code let the button just continue to either pick more letters, pick more letters and then stop or just crash. Choose seems to nip that in the bud and should carry on because 1-10 are the same X coordinates in the array with me moving it down the Y axis +1.

Thank you very much again for the help. Now I've just got to make it take me to a level!

*EDIT* I believe you were also correct about the Else being in the wrong spot. It's a small detail to miss and so I missed it completely. lol (Also coding the way you understand it sticking with it because it works makes sense to me too.)

*EDIT2* I also realized that I needed to change the =/= 0 to = 0 when checking my array (line 25) because when it is 0, it needed to keep going. Because: 0 = bad. It took some time to work the kinks out, but this is the process. I'm just glad there are people that can help.