If you want to add a numeric date or date and time values in the generated document, you need to use the String variable format.
The value of the variable is formatted following the ASPOSE Words library. For more information on building the formatting expressions, search the ASPOSE Words documentation for the Outputting Expression Results.
For example, if d is date, then the following string can be used to add a date into the generated document:
<<[d]:"yyyy.MM.dd">>
The same documentation can be used to create decimal strings.