substituting function variable in function handle

i want to substitute y(5) in place of theta and poceed for the ode calculations.

Here is my script

syms theta
A0 = cos(theta).*[1 5 6; 2 9 3; 1 4 5]; 
A =[A0 zeros(3, 2);
    zeros(2, 3) [1 0; 0 1]]
B = tan(2*theta).*[8 5 1 0 0; 1 1 6 0 0; 2 4 7 0 0; 0 0 0 0 0; 0 0 0 0 0]
C = (cos(2*theta)+2).*[8 5 1; 0 1 6; 2 4 7];

myfun = @(t,y)scriptname(t,y,A,B,C);

% dummy values for tspan and y0
tspan = [0 1];
y0 = zeros(1, 5);
An = matlabFunction(subs(A, y(5)))
Bn = matlabFunction(subs(B, y(5)))
Cn = matlabFunction(subs(C, y(5)))

sol = ode45(myfun,tspan,y0);

h = figure;
plot(sol.x,sol.y(i,:));

function dydt = scriptname(t,y,An,Bn,Cn)

inertia = 0.05;
Wr = 2*pi*50;
p =2;
% Cn = double(subs(C,y(5)))
for i=1:3
    I(i,1)=y(i);
end
I
Te = 1/2*p*I'*Cn*I

if t<0.75
    Tl=0;
else
    Tl=7.31;
end

V = [1.4142*400/sqrt(3)*cos(Wr*t);
    1.4142*400/sqrt(3)*cos(Wr*t+2.*pi/3.);
    1.4142*400/sqrt(3)*cos(Wr*t-2.*pi/3.);
    (Te-Tl)/inertia;
    y(4)]

% An = double(subs(A,y(5)))
% Bn = double(subs(B,y(5)))
dydt = An\V-(Bn*y);
end

It is showing the error of "unrecognized function or variable y".

[Stephen23]

Context:

https://www.mathworks.com/matlabcentral/answers/1451984-ode45-is-taking-hours-and-hours-to-compute

@Bathala Teja: you need to pass the function handles to the anonymous function (i.e. An, etc) not the symbolic functions:

https://www.mathworks.com/matlabcentral/answers/1451984-ode45-is-taking-hours-and-hours-to-compute#comment_1734264

[Bathala Teja]

sir can you please rewite my script with your changes?

iam really confused sir please help me out

[Bathala Teja]

hello

anything edited??