$MSExcelGroup function can be used to create a value group
based on data from Microsoft Excel file.
The function has following parameters:
Example: $MSExcelGroup(1,c:\data files\countries.xls,Sheet1,Name,Country) - specifies
sheet 'Sheet1' in the 'c:\data files\countries.xls' file as data source and uses the first column 'Name'.
$Group(1,2) - refers to the second column 'Country'.
Limitation: Java edition of the pattern engine does not support this function.