How to properly load the file?

Dear all

I have this code:

if exist ('netrb')
load netrb
disp('Neuronová síť byla načtena')
else
load trenovaci_modely1
disp('Trénovací modely byly načteny')
P = [c{1,:}];
T = [c{2,:}];
net = newrb(P,T,0,0.3);
end
save netrb net
disp('Neuronová síť byla uložena')

I would like to load netrb from my current folder, but always when I run this code, it starts to train network as if none exist in my folder. Please advise me, what´s wrong?