How to plot this (time delayed) system in matlab?

I have a time delayed state space model like this...!

dx1/dt = x1(t) + x2(t) + x1(t-d(t)) +x2(t--d(t))

dx2/dt = 0.7*x1(t) + x2(t) + x1(t-d(t)) +0.5*x2(t--d(t))

where x(t-d(t)) is the delayed state.... and our delay is time variant given by d(t) = 3+2*cos(t)...

i know about dde23 but it's for time invariant delays...

i wrote a code like this....

        function v=f(t,x)
                     v=zeros(2,1);

        v(1) = x(1) +  x(2);
        v(2) = 0.7* x(1) + x(2);

        Initial_Time=10;
        Final_Time=5000;
        [x1,x2] = meshgrid(-2:0.1:2);

        [t,x] = ode45(@v, [Initial_Time Final_Time], [0.01624 0.1535]);

        plot(x(:,1),x(:,2))

this code is without adding time delay... will someone help how to add time delay in this....?