GetFieldNameUse this function to get the fully qualified name of fieldName (tableName::fieldName).GetFieldName(x) returns the name of a field reference passed into a custom function as parameter x.GetFieldName(Evaluate(<fieldName>)) returns the name of a field based on the data stored in <fieldName>.GetFieldName(Evaluate(Get(ActiveFieldName))) returns the fully qualified name of the field that has the focus when executed.