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Level 4

Hello everybody!

I have a challenge that to me seems a bit tricky. I have a text field that appears as a comb of 11 characters. The user will enter digits in the format 999999-9999. Now I would like to check if the firs 6 digits are a valid date in the format ddmmyy. (the last 4 digits are random)

How can I do that?

Kirstine