PowerApps- Phone number validation - in Label

Submitted by melinda on Mon, 11/15/2021 - 11:10

Shows error in label

!IsBlank(DataCardValue7_1.Text) And !IsMatch(DataCardValue7_1.Text,Digit & Digit & Digit & Hyphen & Digit & Digit& Digit& Hyphen & Digit & Digit & Digit &Digit)