Riding GRTA Xpress with a MARTA Breeze Upass from GSU?

I noticed on the GRTA Xpress website that they accept Marta Breeze passes for one - way fare of $3. I am going to GSU in the fall and will be purchasing the 30 day unlimited Upass. Does anyone that has attended GSU or any other Atlanta school know whether or not the Upass covers the fare on GRTA Xpress buses? It seems as though they only except Breeze cards with stored cash value, but never mentions the Upass. I'm going to call customer service in the morning, but wanted to see if anyone knew. Thanks.