GetNotSelectedCount  - chart function
                This chart function returns the number of not-selected values in the field named fieldname. The field must be in and-mode for this function to be relevant.
Syntax:
GetNotSelectedCount(fieldname [, includeexcluded=false])
Arguments:
| Argument | Description | 
|---|---|
| fieldname | The name of the field to be evaluated. | 
| includeexcluded | 
                                 If includeexcluded is stated as True, the count will include selected values which are excluded by selections in another field.  | 
                        
Examples:
GetNotSelectedCount( Country )
GetNotSelectedCount( Country, true )