Hi Rob, I might just be making it more confusing for myself. In this example, I'm really just trying to learn how to replace a part of an array with something else when it's an array of arrays. In the above example, I know exactly where the issue is. @rows[120][0] So how to I replace whatever is in @rows[120][0] with say the number 120? -- Posted via http://www.ruby-forum.com/.