How to plot the verilogA module data points using OCEAN

 Dear All,

I used a verilogA module in my schematic which measures the period of the output  waveform of a block.

The verilogA code is as follows:-

`include "disciplines.vams"

(*instrument_module*)
module frequency_meter(in);
    parameter real thresh=0;    // threshold (V)
    parameter integer dir = 1 from [-1:1] exclude 0;
                // 1 for rising edges, -1 for falling
    input in;
    voltage in;
    integer timing;
    real t0, t, period, freq;
    analog begin
    t = last_crossing(V(in) - thresh, dir);
    @(cross(V(in) - thresh, dir)) begin
        if (timing) begin
        period = t - t0;
        freq = 1/period;
        $strobe("period = %rs (measured at %rs).\n", t - t0, $abstime);
        end
        t0 = t;
        timing = 1;
    end
    end
endmodule

I want to plot freq versus time  using OCEAN script.

Can anybody please tell how it can be done.

I did :

save I5:period I5:freq
plot(I5:freq).

This gives error in OCEAN script.

But in input.scs file I worte:-

save I5:period I5:freq 

I ran the simulation and in the wavescan I was able to plot freq-vs-time.

Kind Regards,