incorrect number of input arguments for [K,CL,GAM,INFO] = hinfsyn(P)

Here my program for finding H-infinity control it satisfys the all assumptions but shows error:

A=[-6.97e003 -6.67e003 0;45.45e003 0 0;-2550 -2550 -2555];

B=[0 6.67e003 0 6.67e003;0 -45.45e003 0 0;255e003 2550 2550 0];

C=[-1 -1 1;0 0 0;-1 -1 0];

D=[100 1 1 0;0 0 0 1.85;100 1 1 0];

%%

%assumptions start

A=[-6.97e003 -6.67e003 0;45.45e003 0 0;-2550 -2550 -2555];

B1=[0 6.67e003 0;0 -45.45e003 0;255e003 2550 2550]

B2=[6.67e003;0;0]

C1=[-1 -1 1;0 0 0]

C2=[-1 -1 0]

D12=[0;1.85]

D21=[100 1 1]

P=[A-j*3*eye(3) B2; C1 D12]

p1=rank(P)

q=[A-j*3*eye(3) B1; C2 D21]

q1=rank(q)

%assumption end

P=ltisys(A,B,C,D)

[K,CL,GAM,INFO] = hinfsyn(P)

Error:

??? Error using ==> hinfsyn at 137

incorrect number of input arguments

Error in ==>

[K,CL,GAM,INFO] = hinfsyn(P)

if anybody known this one help

thank u....