so I want this FixedUpdate() Method to stop executing when the Method OnMouseDown() is executed. A bool doesn't work a if() statement also doesn't work Please help :) Thanks,

 private void FixedUpdate()
    {
            int random = Random.Range(1, 4);
            if (random == 1)
            {
                m_SpriteRenderer = GetComponent<SpriteRenderer>();
                m_SpriteRenderer.color = Color.green;
            }
            if (random == 2)
            {
                m_SpriteRenderer = GetComponent<SpriteRenderer>();
                m_SpriteRenderer.color = Color.blue;
            }
            if (random == 3)
            {
                m_SpriteRenderer = GetComponent<SpriteRenderer>();
                m_SpriteRenderer.color = Color.yellow;
            }
        
    }
    private void OnMouseDown()
    {
        shouldexecute = false;
    }

so I want this FixedUpdate() Method to stop executing when the Method OnMouseDown() is executed. A bool doesn't work a if() statement also doesn't work Please use my whole code Please help :) Thanks,

 private void FixedUpdate()
    {
            int random = Random.Range(1, 4);
            if (random == 1)
            {
                m_SpriteRenderer = GetComponent<SpriteRenderer>();
                m_SpriteRenderer.color = Color.green;
            }
            if (random == 2)
            {
                m_SpriteRenderer = GetComponent<SpriteRenderer>();
                m_SpriteRenderer.color = Color.blue;
            }
            if (random == 3)
            {
                m_SpriteRenderer = GetComponent<SpriteRenderer>();
                m_SpriteRenderer.color = Color.yellow;
            }
        
    }
    private void OnMouseDown()
    {
        shouldexecute = false;
    }