It's helpful if you also share the error you are getting.
In this case, the error is stating that your odefun must return a column vector. It is currently returning a row vector. You can fix this by adding a column index of 1 in your assignments to dydt.
dydt(1,1)=kp*y(1)*(1-y(1))-kpm*y(1)*y(2);
dydt(2,1)=(kmp*y(1)+y(3))*y(2)*(1-y(2))-y(2);
dydt(3,1)=klm*f(y(2))-kl*y(3);
