Matlab - Matlab GUI- Edit Text dejar valor sugerido

function guide_OpeningFcn(hObject, eventdata, handles, varargin)

numeros=12;

set(handles.edit1,'string',numeros)

function Digestor_Aerobio_OpeningFcn(hObject, eventdata, handles, varargin)

set(handles.materia_seca,'string',12)

handles.output = hObject;

guidata(hObject, handles);

function materia_seca_Callback(hObject, eventdata, handles)

function calcular_Callback(hObject, eventdata, handles)

Materia_Seca=str2double(get(handles.materia_seca,'string'));

function Digestor_Aerobio_OpeningFcn(hObject, eventdata, handles, varargin)

set(handles.edit1,'string',12);

handles.output = hObject;

guidata(hObject, handles);

function edit1_Callback(hObject, eventdata, handles)

function pushbutton1_Callback(hObject, eventdata, handles)

Materia_Seca=str2double(get(handles.edit1,'string'));