Feedback for octave

[Andrei Gutierrez]

I have a problem to define the arguments for the feedback for control.
for example:
num=1;
den=[1 10 1];
feedback(tf(num,den),tf(1,1))

It is OK, but if My H(s) is not 1, for example H(s) = s + 1 ...

numh=[1 1];
denh=1;
feedback(tf(num,den),tf(numh,denh))

Gives me the error that the zeros are more than the poles, but in the
feedback its common to have a numerator like this.
Any idea?-.
Thank you.