popup-menu not changing rectangle facecolor

I have a problem with the popup menu being able to change a rectangle color. I want the popup menu to change the rectangle color when it is clicked on this is my code below. Please any help would be so appreciated.

% --- Executes on button press in rect.
function rect_Callback(hObject, eventdata, handles)
% hObject    handle to rect (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
global hrect

global rectX

hrect = rectangle('Position',[28 28 20 20])
title('Rect')

AND the popup-menu is below. Please do you know how I can comment a code on this site???

function popupmenu1_Callback(hObject, eventdata, handles)
% hObject    handle to popupmenu1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: contents = cellstr(get(hObject,'String')) returns popupmenu1 contents as cell array
%        contents{get(hObject,'Value')} returns selected item from popupmenu1

global hrect

x=get(hobject,'value');
switch x
    case 1
        r=get(hrect,'value');
        set(hrect,'backgroundcolor','r')
    case 2
        r=get(hrect,'value');
        set(hrect,'backgroundcolor','g')
    case 3
        r=get(hrect,'value');
        set(hrect,'backgroundcolor','b')
    case 4
        r=get(hrect,'value');
        set(hrect,'backgroundcolor','y')
end

[Doug Hull]

What happens when you run this?

Answer 1

[Walter Roberson]

Rectangles do not have background colors. They only have FaceColor.