In the old responsive designer I can validate a textbox using a regular expression. In the new reponsive designer I can't find anything except a text mask. Is there a still a way to validate via regex? Specifically I want to validate against this regex: ^[CcPpSsVv]{1}[Pp]{1}[0-9]{9}:[0-9]{2}$
Best answer by SimonMuntz
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