Range of numbers in a textbox

Im trying to limit the range from 1 to 60 in a textbox. So how can i know if is on range?

Use the textboxChanged event to check the value in the textbox, and either remove the value if not between 1-60, and/or raise a notifier to advise the user

How can i compare the text with the number?

See Chapter 18 of
http://www.appinventor.org/book2

This should cover things:

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