ColorBar outerposition property on Matlab 2015b

Hello.

My script used to work on Matlab 2013a, but it stopped working after upgrading to Matlab 2015b.

I plot an image using the image command then I assign the colorbar object to object c (see below).

    c=colorbar('peer',a,...
            'location','EastOutside',...
            'units', 'centimeters');

Then I try to get the outerposition of the colorbar:

    cpos=get(c,'OuterPosition');

and Matlab throws this error:

    Error using matlab.graphics.illustration.ColorBar/get
    There is no OuterPosition property on the ColorBar class.

Does anyone know the direct alternative to the OuterPosition property in Matlab 2015b? Rewriting this code may take ages!