How to pass the subnetworking to be used in a TSAM provisioning

After enabling the parameters in the TSAM GUI, as described at

http://eduardoware.blogspot.com/2010/09/how-to-expose-parameters-in-tsam.html

and setting the multiple NIC support, as described at:

http://eduardoware.blogspot.com/2010/09/how-to-enable-multiple-nic-interfaces.html

then create a new Custom Property, as depicted below:

Remember to set the type to VST.

Furthermore, the proper name of the Property is PMRDP.Net.Subnet_0