How can I enter L and Ommega in the matlab program?

L=15;% length of time

ommega=10;% period

lambda = 388;

rho = 0.009;

beta=3.61e-8;

delta=0.18;

p=50000;

c=23;

f = @(t,x) [lambda-rho*x(1)-beta*x(1)*x(3); beta*x(1)*x(3) - delta*x(2); p*x(2) - c*x(3)];

tspan = [0,1];

options = odeset('RelTol',1e-1,'AbsTol',[1e-4 1e-4 1e-4]);

[t,xa] = ode45(f,tspan,[43100 0 0.0033],options);

plot(t,xa(:,1),'-'); figure

plot(t,xa(:,2),'-.');figure

plot(t,xa(:,3),'.');