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Yes/No Control Validation Issue - IsNullorEmpty Not Working

Question asked by lisamariew71 on Aug 7, 2016
Latest reply on Aug 10, 2016 by emha

I have a form with a number of yes/no controls.  I want a rule in place that makes sure at least one field is checked before the form can be saved.  I added a validation rule to the save button as per below:


isNullOrEmpty(HarmFinancialLoss) && isNullOrEmpty(HarmKeyTargetsUnderachieved) && isNullOrEmpty(HarmWastedHrs)


When I do a preview and try to test rule, I am still allowed to save.  This rule seems to work on a text box but not a yes/no control.  Does anybody know what I am doing wrong please?