Solve and plot the phase portrait for van der pol ODE with time dependent term

I want to solve this system of ode by ode45 and then plot the x1 and x2 with t and phase portrait later but I got error which i couldint figure out

How i could draw the vector field and eigen vectors in the phase portrait because i dont get by using ode set and odephase 2

function [dxdt] = myode(t,x,gt,g,lambda,gamma,omega)
g=interp1(gt,g,t)
dxdt=zeros(2,1);
dxdt(1)=x(2);
dxdt(2)=lambda.*(1-x(1)^2)*x(2)-x(1)+g;
end

%script
 gamma=0.25;
omega=[1.04 1.1];
 gt=[0 ,500]
 g=gamma.*sin(omega(1).*gt)
% g=gamma.*sin(omega(2).*gt)
lambda=0.01;
x0=[1 0]
tspan=[0 500];
opts = odeset('RelTol',1e-2,'AbsTol',1e-4);
[t2,x2]=ode45(@(t,x) myode(t,x,gt,g,gt,lambda,gamma,omega(1)),tspan,x0,opts);

% ploting the phase portait
function PLOT_VDP()
figure(1)
    options=odeset('OutputFcn', @odephas2);
        lambda=0.01;
        gamma=0.25;
        omega=[1.04 1.1];
        x0=[1; 0]
        x01=[3;0]
        tspan=[0 500];
         
        [t,x]=ode45(@(t,x) myode(t,x,g,lambda,gamma,omega(1)),tspan,x0,options);
end

[Jan]

@Farhan Omar: Removing your question after answers have been given is impolite. This reduces your chance to get further attention in this forum.

[F.O]

No satisfactory answer is given here. I want to delete the question because I find another way to solve the problem.

[Jan]

And now all visitors of this page see this junk: "Solve mmmmmmmmmm​mmmmmmmmmm​mmmmmmmmmm" and "kkklllllll". Come on, F.O, you can see, that leaving junk in the forum is not useful.

The nature of the forum is the sharing of solutions. So explain your solution in an own answer and accept it, instead of inserting nonsense. Imagine how hillarious this forum would look like, if all users roll an angry armadillo over the keyboard, when their problem is solved.

[Rena Berman]

(Answers Dev) Restored edit.

Answer 1

[madhan ravi]

g,lambda
%^—-missed it

Don’t name variable lambda (will shadow in-built function gamma())

[madhan ravi]

After someone answers the question it’s not appropriate to edit the question!! You have some problems with declaring the input arguments while calling the function, analyse slowly and observe what obvious mistake you made.