Custom number format with text

newb formula of the day

say you are inputing into cell b1...use data validation, custom formula

=AND(LEN(B1)=10,CODE(LEFT(B1))>=65,CODE(LEFT(B1,1))>=65,CODE(LEFT(B1,2))>=65,CODE(MID(B1,4,1))=45,CODE(LEFT(B1,4))<=90,CODE(LEFT(B1,5))<=90,CODE(LEFT(B1,6))<=90,CODE(LEFT(B1,7))<=90,CODE(LEFT(B1,8))<=90,CODE(LEFT(B1,9))<=90,CODE(LEFT(B1,10))<=90)

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