Need help with edit box in matlab gui

Hi, I have the following matlab code:

if true
h=1/n;
x=h:h:(1-h);
N=(n-1);
A=zeros(N);
b=zeros(N,1);
A=-2*eye(N)+diag(ones(N-1,1),1)+diag(ones(N-1,1),-1);
b=-h.^2.*functie(x);
v=A\b';
plot(v)
end

I take n from an edit box.

The problem is that when I run this code without gui, it works even if n is 5,10,50,100

When i put it in matlab gui, i can give n values from 1 to 9, why is that ?

I am taking the n value like this:

if true
  n = get(handles.edit2,'String'); 
end

Thank you!

Answer 1

[Matt Fig]

n = str2double(get(handles.edit2,'String'));

[Cristian]

Stupid me... works, thank you!