SCVMM 2012 R2 deploy network problem

Hi,

I'm trying to set up the network on SCVMM 2012 R2 according to the several documentation and I'm finding a problema trying to deploy my simple design.
Basically I need to create two network environments completelly isolated from each other. The servers have one NIC connected to these networks, and what I have configured is two logical networks with some networks sites, the uplinks and logical switch, there is a Virtual network per logical network to connect the VMs... all seems to be ok, I add this two logical networks to the hosts but when I want to configure the networking in the virtual machine, I only see one logical network, I can't choose the environment I want... I don't know what I'm doing wrong...

Thanks in advanced...