@jetdv sir can u help in this please.
i created it via help of gemini..

It is working good but it is stopping playback..
i want it should run and execute and keep playing the cursor even it freeze frame even unfreeze,,

pls take a look at it sir..

using System;
using System.Collections;
using System.Windows.Forms;
using ScriptPortal.Vegas;

public class EntryPoint
{
    public void FromVegas(Vegas vegas)
    {
        // 1. Check if playback is currently active
        bool wasPlaying = vegas.Transport.IsPlaying;

        // Get the current cursor position
        Timecode cursorTime = vegas.Transport.CursorPosition;

        foreach (Track track in vegas.Project.Tracks)
        {
            if (track.IsVideo())
            {
                foreach (TrackEvent evnt in track.Events)
                {
                    if (evnt.Selected)
                    {
                        // Ensure the event is actually under the cursor
                        if (evnt.Start <= cursorTime && evnt.End > cursorTime)
                        {
                            VideoEvent videoEvent = (VideoEvent)evnt;
                            ToggleFreezeAtCursor(videoEvent, cursorTime);
                        }
                    }
                }
            }
        }

        // 2. If it was playing before, ensure it keeps playing (or resumes)
        // VEGAS often stops playback when timeline data is modified by a script.
        if (wasPlaying)
        {
            vegas.Transport.Play();
        }
    }

    private void ToggleFreezeAtCursor(VideoEvent evnt, Timecode cursorTime)
    {
        Envelope velEnv = null;

        // Find Velocity envelope
        foreach (Envelope env in evnt.Envelopes)
        {
            if (env.Type == EnvelopeType.Velocity)
            {
                velEnv = env;
                break;
            }
        }

        // Create if missing
        if (velEnv == null)
        {
            velEnv = new Envelope(EnvelopeType.Velocity);
            evnt.Envelopes.Add(velEnv);
        }

        // Calculate time relative to the start of the event
        Timecode relCursorTime = cursorTime - evnt.Start;

        // Calculate the time for the "next frame"
        Timecode oneFrame = Timecode.FromFrames(1);
        Timecode nextFrameTime = relCursorTime + oneFrame;

        // Get the current velocity value exactly at the cursor
        double currentSpeed = velEnv.ValueAt(relCursorTime);

        // Determine target speed (Toggle)
        // If it is 0, we go to 1. If it is anything else, we go to 0.
        double targetSpeed = (currentSpeed == 0.0) ? 1.0 : 0.0;

        // 1. Add Anchor Point (Current Speed) at Cursor Position
        // This acts as a wall to preserve previous speed
        AddPointSafe(velEnv, relCursorTime, currentSpeed);

        // 2. Add Toggle Point (New Speed) at Next Frame
        // This switches the speed immediately after the cursor frame
        AddPointSafe(velEnv, nextFrameTime, targetSpeed);
    }

    private void AddPointSafe(Envelope env, Timecode time, double value)
    {
        // Check if a point already exists at this exact time
        EnvelopePoint existingPoint = env.Points.GetPointAtX(time);

        if (existingPoint != null)
        {
            // Update existing point
            existingPoint.Y = value;
            existingPoint.Curve = CurveType.None; // Hold
        }
        else
        {
            // Create new point with Hold curve for instant change
            EnvelopePoint newPoint = new EnvelopePoint(time, value, CurveType.None);
            env.Points.Add(newPoint);
        }
    }
}

thanks in advance