You just reference it. Eg:
or whatever.
By the way, just flicking through your code, I can see that you're not always going to place exactly thirty 1's in the array of zeroes. You're not checking to see if there is already a one in the slot before making it one. In some cases, you will store a 1 there, then come back and make it one again, and you'll have only 29 on screen.
If ova(x,y)=1 then DrawImage image,x,y
or whatever.
By the way, just flicking through your code, I can see that you're not always going to place exactly thirty 1's in the array of zeroes. You're not checking to see if there is already a one in the slot before making it one. In some cases, you will store a 1 there, then come back and make it one again, and you'll have only 29 on screen.