QvdNoOfFields  - script function
                        This script function returns the number of fields in a QVD file.
Syntax:
QvdNoOfFields(filename)
Arguments:
| Argument | Description | 
|---|---|
| filename | 
                                         The name of a QVD file, if necessary including path, as a folder or web data connection. Example: 'lib://Table Files/' In legacy scripting mode, the following path formats are also supported: 
  | 
                                
Examples:
QvdNoOfFields ('MyFile.qvd')
QvdNoOfFields ('C:\MyDir\MyFile.qvd')
QvdNoOfFields ('lib://data\MyFile.qvd')