Array data size limit?

Hello guys!

I have two dimensional array with fixed size (15x100). Empty slots are filled in order with strings containing 16-17 chars. In same stage when storing values the app crashes. So far I have not been able to reproduce this in simulator. 

i’m just wondering what is the data size limit of an array? Might that be the issue? 

is there any way to debug in watch?

Thanks!