CFD Analysis Creation of Boundary Conditions

Hello,

Currently I am trying to run a CREO Flow Analysis for my parts and I am having trouble making boundary conditions for my inlet and outlet for the parts I have created. 

When I did the Without Heat Transfer: Power Inverter Overview tutorial on CREO, I was able to do it flawlessly. Now when I do the tutorial,  I automatically get BC_1 and BC_2. When I do CREO flow simulation for my parts, I don't get the those boundary conditions at all and when I try to add them, it doesn't allow me and the error I get says "Selected surfaces don't refer to single fluid domain" even though I have created my fluid domain. 

I have the two images attached to this post. Let me know what I can do to fix the problem.

Thanks,

Greg