Regular Expression For Looking For Colons (:) In A String / Error There Is No Colon In String

Sep 2, 2010

I am really struggling with this! Using the regular expression validator I created an expression, thus ":" to show an error message if the user tries to enter in a name that contains a colon. What I am getting is the error message showing even when there is no colon (:) in the string. What am I doing wrong?

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