Stream Input for Serial Communication Problem

I'm trying to receive data from my atmel board and plot in a scope of simulink. So, I did this model:

And my Stream Input configuration:

For my initial tests, I'm using VSPE (Virtual Serial Ports Emulator) to create a virtual port to communicate and the RComSerial to send some data. It didn't work.

So I was thinking that my problem was the VSPE and RComSerial, so I made a new model on simulink of stream output, and it worked at first time.

I'm doing anything wrong on my Stream Input that I'm not seeing? I will need to receive 3 double data separated by a space.