Connecting models for state space

I have to inputs, r and d respectively. I can only manage to create SYS with one input only as you can see on my last line of code. Would it be possible to also include 'd' as an input argument when i'm connecting the system?

s= tf('s');

sum1 = sumblk('u1 = r - y7 - y6'); sum2 = sumblk('u2 = d + y1'); sum3 = sumblk( 'Y = y5 + y4');

sys1 = 0.6*s/s; sys2 = 1/s; sys3 = 1/(s+1); sys4= 1/s; sys5 = 1.8*s/s; sys6 = 2.2*s/s; sys7 = 2.5*s/s;

sys1.u = 'u1'; sys1.y = 'y1'; sys2.u = 'y1'; sys2.y = 'y2'; sys3.u = 'y2'; sys3.y = 'y3'; sys4.u = 'y3'; sys4.y = 'y4'; sys5.u = 'y2'; sys5.y = 'y5'; sys6.u = 'y3'; sys6.y = 'y6'; sys7.u = 'y4'; sys7.y = 'y7';

sys0 = append(sys1,sys2,sys3,sys4,sys5,sys6,sys7);

SYS = connect(sys0,sum1,sum2,sum3,'r','Y')