Can I detect if a text box has text or numbers?

I have a text box where the only valid input is a number, otherwise the program has to notify you that only numbers are accepted. I have tried to do the same as i did in Scratch (multiply the text by 1 and if the result is the same then it's a number) but the app returns an error. Does anyone know if there's any way to detect it?


you have this block:

It will return true/false.

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Thank you!!

I had only looked in the text blocks :sweat_smile: :sweat_smile:

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