.rvmrc not working with vim NERDTree 'cd'
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I installed rvm and a couple of rubies since i'm working with projects based on different ones. Then created .rvmrc files in project directories and they work perfectly when i 'cd' to projects' folders in my terminal:

    ~$ cd workspace/prox/
    ~/workspace/prox$ rvm current
    ruby-1.9.3-p194@prox
    ~/workspace/prox$ cd ../cto/
    ~/workspace/cto$ rvm current
    ruby-1.8.7-p358@openservice
    ~/workspace/cto$ 

And now i'm trying to use vim + NERDTree as my new ide to improve performance but i encountered a problem with .rvmrc:
When i cd in NERDTree to a project's folder and get confirmation that CWD has changed i end up with default ruby@gemset. Hance .rvmrc hasn't got processed.
Does anyone know if it is possible to make .rvmrc files work with vim NERDTree?