Vari-Audio is only available in the full version. You would have to upgrade to get it. You could do a C7 trial though and use it for 30 days to try it out.
XPS 17 Core-i7 2820QM, 16GB RAM. Cubase 6.5.5 x64 on Windows 7. Cubase 7.5 Trial. Scarlett 2i2. M-Audio Axiom Pro 61. Komplete 8. HALion 5. Jamstix 3.5. HSO VST Sound Set. Absolute VST+. 418 Carrier Landings.