Paralell execution of COM instances

Hello!

I'm just trying to improve our test environment with the Paralell Toolbox; however I face a problem with starting several instances of Matlab by COM objects. So what I try to do basically is calling the function

function testpar
ML=ver('Matlab');
ML_Path=matlabroot;
ML_Ver=ML.Version;
res = [];
tic
parfor i=1:3
    NewMatlab = actxserver(['matlab.application.single.',ML_Ver]);
    Answer = NewMatlab.Feval('test',1);
    res(i) = Answer{1};
    NewMatlab.Quit;
    NewMatlab.release;
end
disp(toc)
end

where the function "test" is simply

function a = test
    a = 10;
    for i = 1:10
       a = a + i; 
    end
end

Unfortunately it seems to me that instead of opening three instances of Matlab in paralell the instances are called sequentially.

Is there any possibility to call the COM instances paralell?

Thanks a lot!