How to identify Alphabet or Number in a String

Look in this thread and by using that extension you can accomplish what you want.

https://community.appybuilder.com/t/how-to-check-if-same-number-is-repeated-twice-in-a-textbox/17230/2?u=boban_stojmenovic

Sorry, my image shows the opposite but you understand at least how now

edit..Damn Ken you beat me by 30sec

/Boban

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