❔ Failing in breaking for loop

bool StopMoving = false;

public  void Event1(int hp)
{
    StopMoving = true;
    MoveForm(0, 0, 1);
    //This void is called when user clicked let's say a button
    //Because of that, it can be called anytime
    //Change the StopMoving to true to stop for loop, then call the function?
}
       
private  void MovementManager()
{
    MoveForm(600, 200, 4);
    //This void is called upon start of the program
}

private void MoveForm(int targetX, int targetY, int time)
{
    int framerate = 60;

    int newTime = time * framerate;
    int DistanceX = this.DesktopLocation.X - targetX;
    int DistanceY = this.DesktopLocation.Y - targetY;

    //Per Time Unit
    int PTUX = DistanceX / (int)newTime;
    int PTUY = DistanceY / (int)newTime;

    Debug.Print($"Pos: {targetX}X {targetY}Y; Dis: {DistanceX}X {DistanceY}Y");

    for (int i = newTime; i > 0; i--)
    {
        Thread.Sleep(1000 / framerate);
        if (StopMoving)
        {
            StopMoving = false;
            break; // This should exit the for loop, but doesn't?
        }
        Point tempPoint = new Point(this.DesktopLocation.X + PTUX, this.DesktopLocation.Y + PTUY);
        this.Invoke((MethodInvoker)delegate
        {
            this.DesktopLocation = tempPoint;
        });
    }
}

bool StopMoving = false;

public  void Event1(int hp)
{
    StopMoving = true;
    MoveForm(0, 0, 1);
    //This void is called when user clicked let's say a button
    //Because of that, it can be called anytime
    //Change the StopMoving to true to stop for loop, then call the function?
}
       
private  void MovementManager()
{
    MoveForm(600, 200, 4);
    //This void is called upon start of the program
}

private void MoveForm(int targetX, int targetY, int time)
{
    int framerate = 60;

    int newTime = time * framerate;
    int DistanceX = this.DesktopLocation.X - targetX;
    int DistanceY = this.DesktopLocation.Y - targetY;

    //Per Time Unit
    int PTUX = DistanceX / (int)newTime;
    int PTUY = DistanceY / (int)newTime;

    Debug.Print($"Pos: {targetX}X {targetY}Y; Dis: {DistanceX}X {DistanceY}Y");

    for (int i = newTime; i > 0; i--)
    {
        Thread.Sleep(1000 / framerate);
        if (StopMoving)
        {
            StopMoving = false;
            break; // This should exit the for loop, but doesn't?
        }
        Point tempPoint = new Point(this.DesktopLocation.X + PTUX, this.DesktopLocation.Y + PTUY);
        this.Invoke((MethodInvoker)delegate
        {
            this.DesktopLocation = tempPoint;
        });
    }
}