reshape error in order to Convert Each Pixel to Decimal Values

Error using reshape
Product of known dimensions, 220, not divisible into total number of elements, 1.
Error in file2>embedding_radiobutton_Callback (line 196)
imggrevT=reshape(imggbrev,row,[]);
Error in gui_mainfcn (line 95)
        feval(varargin{:});
Error in file2 (line 17)
gui_mainfcn(gui_State, varargin{:});
Error in
matlab.graphics.internal.figfile.FigFile/read>@(hObject,eventdata)file2('embedding_radiobutton_Callback',hObject,eventdata,guidata(hObject)) 
Error while evaluating UIControl Callback.