[wpkg-users] how to detect PC architecture

[Yanni]

Hello

Probably a silly question but here it goes.

Do I have to have a different xml file to install a 64bit software?
For example the Filezilla silent installer available online is for the 
32 bit version.
Is it possible to make the XML file detect whether the machine is 32 or 
64 bit and install the relevant architecture?

Thank you
Goude