how to use connect command for connecting blocks ?

Hello, I am doing simulation with LQG controller and for plant and controller connection i am using "connect" command, but i am not getting its right or wrong could you please check it ?

here is my code for connect

*************

G = plant , C = controller , v= noise

***********************

sum = sumblk('yo=y+v');

G.InputName ='u'; G.OnputName='y';

C.InputName='yo'; C.OnputName ='u';

T = connect (G,C,sum,'v','yo');

*********************** here yo is sum output that is addition of noise 'v' and plant output 'y'

and i have generated noise

v = randn(1,10)

and then save to noise.mat and this file i am loading in the simulation

load noise.mat;

in this file variable v contains noise.

could you tell any one i have written code is correct or wrong because i want to measure output sensitivity using connect command and compare it with loopsens command use to measure sensitivity. I have done this but the both graphs are shwing different.

block diagram