How to set output in Static text box in MATLAB GUI for a calculation in pushbutton

Hi, I am trying to code in MATLAB GUI push button for calculation, that calculation I firstly coded in Script file and is ok, but in GUI pushbutton i am facinng some problem, I would like to show the code that I am using in pushbutton callback only and i do not code in any other callback function

global D1 D2 dh t V1 V2 rowNo LL L
D1=str2num(get(handles.D1,'String'));
D2=str2num(get(handles.D2,'String'));
dh=str2num(get(handles.dh,'String'));
t=str2num(get(handles.t,'String'));
V1=str2num(get(handles.V1,'String'));
V2=str2num(get(handles.V2,'String'));
rowNo=str2num(get(handles.rowNo,'String'));
LL=str2num(get(handles.LL,'String'));
L=str2num(get(handles.L,'String'));
s1=pi*D1^2/4;
s2=pi*D2^2/4;
Sb=pi*dh^2/4;
press=101325; 
q=1.293; 
c=340;
S=(2*pi*D1/2)*LL;
M10=V1/c;
M11=M10*s1/(rowNo*Sb+s1);
M20=V2/c;
M21=M20*s2/(rowNo*Sb+s2);
Nextspeed=[M11*340;M21*340];
Mb=(M21-M20)*(s2/Sb); 
Ub=press/(q*c); 
Ubspeed=Mb*c+Ub/Sb; 
Hrate=rowNo*Sb/S; 
R=(7.337*(1+72.23*Mb)*10^-3)/Hrate; 
X=(2.2245*(1+51*t)*(1+204*dh)*10^-5)/Hrate; 
Z1=q*c/s1; 
Z2=q*c/s2; 
Zb=q*c/Sb; 
Z=q*c*(R+1*i*X)/Sb; 
A=Z^-1 ; 
G=zeros(4,4);
H=zeros(4,4);
B1=M11*Z1^-1;
B2=M11*Z1^-1;
B3=M10*Z1;
B4=M10*Z1^-1;
B5=A*(1-(M10-M11)^2*Zb^2*Z1^-2);
C1=M21*Z2;
C2=M21*Z2^-1;
C3=M20*Z2;
C4=M20*Z2^-1;
E1=1-M10^2;
E2=1-M20^2;
G(1,1)=(1-B3*(B4+B5))/E1;
G(1,2)=(B1-B3*(1+B1*(B4+B5-B2)))/E1;
G(1,3)=B3*B5/E1;
G(1,4)=B3*C1*B5/E1;
G(2,1)=B5/E1;
G(2,2)=(1+B1*(B5-B2))/E1;
G(2,3)=-B5/E1;
G(2,4)=-C1*B5/E1;
G(3,1)=C3*B5/E2;
G(3,2)=B1*C3*B5/E2;
G(3,3)=(1-C3*(C4+B5))/E2;
G(3,4)=(C1-C3*(1+C1*(C2+B5-C4)))/E2;
G(4,1)=-B5/E2;
G(4,2)=-B1*B5/E2;
G(4,3)=B5/E2;
G(4,4)=(1+C1*(B5-C2))/E2;
frequency=0:6:6486;
K=2*pi*frequency/340;
a1=K*L*E1^-1;
a2=K*L*E2^-1;
F1=cos(M10*a1)-1*i*sin(M10*a1);
F2=cos(M20*a2)-1*i*sin(M20*a2);
Htotal=zeros(4,4328);
Gtotal=zeros(4,4328);
Htotal=[];
Gtotal=[];
n=1;
for j=1:1:1082
H(1,1)=F1(n)*cos(a1(n));
H(1,2)=1*i*F1(n)*Z1*sin(a1(n));
H(1,3)=0;
H(1,4)=0;
H(2,1)=1*i*F1(n)*Z1^-1*sin(a1(n));
H(2,2)=F1(n)*cos(a1(n));
H(2,3)=0;
H(2,4)=0;
H(3,1)=0;
H(3,2)=0;
H(3,3)=F2(n)*cos(a2(n));
H(3,4)=1*i*F2(n)*Z2*sin(a2(n)^2);
H(4,1)=0;
H(4,2)=0;
H(4,3)=1*i*F2(n)*Z2^-1*sin(a2(n)^2);
H(4,4)=F2(n)*cos(a2(n));
Htotal(:,4*n-3:4*n)=H;
Gtotal(:,4*n-3:4*n)=G;
n=n+1;
end
guidata(hObject, handles);
set(handles.Result,'String',num2str(Htotal));
set(handles.G,'String',num2str(Gtotal));

but output is not same as Script file moreover in a complex matrix form. So please can anybody help me how can I solve this problem? Thanks if I want to create callback so where should I code? is it in opening function?