Simscape ignores parameter units

Hi!

I have a problem with a custom component. For investigation purposes I created the followinf minimal example of what I try to do. Running a model with this example throws an error showing a unit mismatch in line "Fg = Fn + Fs". Appearently simscape ignores the unit of Fg which I defined in the parameters section. Changing all units to '1'm (which I want to avoid) everthing works well.

component zeroTest

    outputs
        Fn = {[0, 0, 0], 'N'};  % Force normal direction
        Fs = {[0, 0, 0], 'N'};  % Force slope direction
    end
    
    parameters
        Fg = {[0, 0, 1], 'N'};  % Gravity Force
        n = {[0.5, 0, 1], '1'}; % Normal vector
    end
    
    variables
        a = {1, '1/N'};  % Scaling factor between n and Fg
    end
    
    equations
        Fg == Fn + Fs;  % Fn and Fg shall sum up to Fg
        Fn * Fs' == 0;  % Fn and Fs shall be orthogonal
        a*Fn == n;      % Fn point in normal direction
    end
    
    end
    

Error Message:

    Error compiling Simscape network for model myTestModel.
Caused by:
    Error using Common.zeroTest> (line 18)
    ['myTestModel/zeroTest']: Type mismatch for equation.  The left hand side of the equation is [0 0 1] and the
    right hand side of the equation is {[1x3 double], 'N'}.
        Fg = [0 0 1]
        Fn = {[1x3 double], 'N'}
        Fs = {[1x3 double], 'N'}
        

There seems to be something simple I am missing. Hopefully anyone can point me in the right direction.

[J Chen]

The first two lines in the equation section make no sense. A parameter can't equate to two outputs. The two outputs probably should be inputs.