Problem with script

I have made a game that you can spawn certain objects or destroy them, based on which bool is true/false.

it have worked great so far with the two first bools, but the third function (that makes that you can both destroy and create objects) isn’t working for some odd reason.

here’s the script:

using UnityEngine;
using System.Collections;

public class spawnscript : MonoBehaviour {
	

public GameObject cubeprefab;
public GameObject rectangleprefab;
public GameObject stairprefab;
public GameObject spawncube;

// Use this for initialization
void Start () {

}

// Update is called once per frame
void Update () {
	
	
			
	if(Input.GetKeyDown("mouse 0"))
	{
		
		if(idea.Instance.shadow1 == true)
		{
		
	//Vector3 position = new Vector3(camera.transform.position.x + 2, camera.transform.position.y);
	
	Instantiate(cubeprefab, transform.position, transform.rotation);
	//Physics.IgnoreCollision(cubeprefab.collider, spawncube.collider);
		}
		
		if(idea.Instance.shadow2 == true)
		{
		//Instantiate(rectangleprefab, transform.position, transform.rotation);	
		
		Vector3 fwd = transform.TransformDirection(Vector3.forward);
		RaycastHit hit;
		if(Physics.Raycast(transform.position, fwd, out hit,10))
			{
				Destroy(hit.collider.gameObject);
				print("are ou hitting on me?");
			
		}
		
		if(idea.Instance.shadow3 == true)
		{
			
		Instantiate(cubeprefab, transform.position, transform.rotation);	
			
		}
		
		
	}
	
	
	if(Input.GetKeyDown("mouse 1"))
	{
		
	if(idea.Instance.shadow3 == true)
		{
			
		Vector3 fwd = transform.TransformDirection(Vector3.forward);
		RaycastHit hit;
		if(Physics.Raycast(transform.position, fwd, out hit,10))
		{
		
			Destroy(hit.collider.gameObject);
			print("are you hitting on me?...again?");		
					
		}
			
		}
		
	}
	
	
	//if(Input.GetKeyDown("mouse 0"))
	//{
	//Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
	//Vector3 fwd = transform.TransformDirection(Vector3.forward);
	//RaycastHit hit;
	//if(Physics.Raycast(transform.position,fwd, out hit,10))
		//{
		
		//Destroy(hit.collider.gameObject);	
		//print("are you hitting on me?");
			
			
		//}
		
	}
	
	
	
	
		
	}

}

I took the liberty to clean up your code, removing things that were commented out as well as numerous redundant spaces between different lines. I've also indented the code properly so it becomes clearer what the scope of each line of code is, that is, which if-sentences they belong to.

Cleaned up, it looks like this:

public class spawnscript : MonoBehaviour
{
    public GameObject cubeprefab;
    public GameObject rectangleprefab;
    public GameObject stairprefab;
    public GameObject spawncube;

    // Update is called once per frame
    void Update()
    {
        if (Input.GetKeyDown("mouse 0"))
        {            
            if (idea.Instance.shadow1 == true)
                Instantiate(cubeprefab, transform.position, transform.rotation);

            if (idea.Instance.shadow2 == true)
            {
                Vector3 fwd = transform.TransformDirection(Vector3.forward);
                RaycastHit hit;
                if (Physics.Raycast(transform.position, fwd, out hit, 10))
                {
                    Destroy(hit.collider.gameObject);
                    print("are ou hitting on me?");
                }

                if (idea.Instance.shadow3 == true)
                    Instantiate(cubeprefab, transform.position, transform.rotation);
            }

            if (Input.GetKeyDown("mouse 1"))
            {
                if (idea.Instance.shadow3 == true)
                {
                    Vector3 fwd = transform.TransformDirection(Vector3.forward);
                    RaycastHit hit;
                    if (Physics.Raycast(transform.position, fwd, out hit, 10))
                    {
                        Destroy(hit.collider.gameObject);
                        print("are you hitting on me?...again?");
                    }
                }
            }
        }
    }
}

It now becomes clear that the code that is supposed to execute under the 3rd boolean is in fact embedded in the scope that belongs to the second boolean. Also, the code that checks to see if the user has pressed the right mouse button is embedded in the code that executes when the LEFT mouse button is pressed. So it'll likely never execute, because you probably can't get them both to be true in the exact same frame.

This is all confusion caused by improperly indenting code. Make sure you indent your code properly, so you know when one if-sentence begins and another ends.