Multiple Push buttons Use the same process, how can I condense?

I am analyzing an image within a GUI. I can tilt the image in the x or y directions as this is sometimes necessary for a clearer picture. 4 different push buttons control the direction of the tilt, 1 for the +x direction, 1 for -x, 1 for +y, and 1 for -y. Each of these buttons has a segment of similar code. Is there a way to condense this, so I don't have the same lines of code repeated 4 times? I tried to make a separate function and call on that, but I kept having an error that I had referenced a non existent field. Here is some relevant code:

% --- Executes on button press in plusx.

function plusx_Callback(hObject, eventdata, handles)

% hObject handle to plusx (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

Xtilt = handles.analyze_button_Xtilt;

planeX = handles.analyze_button_planeX;

Img1 = handles.analyze_button_Img1;

S_temp = str2double(get(handles.sensitivity,'String'));

if isnan(S_temp)

    uiwait(msgbox('Please insert a non negative number in the Sensitivity 
box','Error'));
    S_out = 0;
elseif S_temp < 0
    set(handles.sensitivity,'String','0')
    uiwait(msgbox('Please insert a non negative number in the Sensitivity box','Error'));
    S_out = 0;
elseif S_temp >= 0
    S_out=S_temp;
end

S = S_out;

Img1 = Img1 + planeX * S;

Xtilt = Xtilt + S;

handles.analyze_button_Xtilt = Xtilt; handles.analyze_button_Img1 = Img1;

UpdatePlots(hObject, eventdata, handles);

The parts that are the same for all 4 buttons are the if statements, starting with "S_temp = str2double(get(handles.sensitivity,'String'));" and ending with "S = S_out;". Any help is appreciated.