Disturbance Transfer Function in Matlab Workspace

If I had a system like this

and I wanted to create a transfer function block for X(s)/Xsp(s), I could do:

 M1 = Km*Gc(PID)*Gv*Gp2;
M2 = Gm;
G = feedback(M1,M2);

but if I had this:

what would my code be like in order to write X(s)/X1(s)? I know it's Gp1/(1+Gc*Gv*Gp2*Gm) but how do I create the tf block the way I did before?