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Performance equation FindEQ for string tag (not digital state) works sometimes ?

Question asked by RandyHawley on Jun 8, 2017
Latest reply on Jun 9, 2017 by rdavin

Some of our users have begun using Data Sets in ProcessBook displays that call the FindEQ function looking for a string tag to be equal to a given value like:




The quoted string is correct for a particular phase they are looking for in the unit.  However, this tag is just a string tag, and not a Digital tag.  The function appears to be generating many, many 'PIvalue Type is Not Allowed For This Call' message in the PI Message Log.  Is this a legal way to use this function, or when comparing to a string must the tag be a Digital tag?