calling a function only when the check box is clicked

i have to call a function when push button is pressed only when the check box is ticked. in checkbox call back iahve written following code

if (get(hObject,'Value') == get(hObject,'1'))
linkaxes_sheep();
end

and in push button callback I have written

 get(handles.checkbox1,'value')

this is giving error . can someone help

[Dennis]

You wont need checkboxcallback for this. Add the following condition to your pushbutton callback.

if get(handles.checkbox1,'value') == 1
     %do stuff
end

In general please be more specific about your problem. 'this is giving error' can mean alot - best would be to copy paste the entire error message.