How to activate GUI button only if somethings true?

Questions & Answers
1

Hi want i want my code to do is only access and activate the gravity on the rigidbody if blue 1 && blue 2 == true, but i can’t find anywhere how to create a gui button inside of an if statemen thats not in an OnGUI() function? Here’s my code if you could please help me I would greatly appreciate it!!(:

var blue2 = false;
var red2 = false;
var destroyedObject : GameObject;
var myLevelResetLost : String;
var myLevelResetWin : String;
var rigidbodyTrigger : Rigidbody;


function OnTriggerEnter (mycollider : Collider) {
		if(mycollider.tag == "Blue1"){
			blue1 = true;
			Debug.Log("blue1");
		}
		if(mycollider.tag == "Red2"){
			blue2 = true;
			Debug.Log("red2");
		}
		if(blue1 && red2 == true){
			Debug.Log("It worked");
			
		}
		
}
	function OnGUI() 
	{
		if (GUI.Button(Rect(10,70,100,40),"Drop Ball")) 
		{
		    attachedRigidbody = rigidbodyTrigger.rigidbody;
			attachedRigidbody.useGravity = true;
		}
	}
function OnCollisionEnter(mycollision : Collision)
{
	if (mycollision.gameObject.tag == "Door")
	{
		Destroy(destroyedObject, 1);
		Application.LoadLevel(myLevelResetLost);
	}

		if(mycollision.gameObject.tag == "EndGame")
		{
				Application.LoadLevel(myLevelResetWin);
		}
}
2

void OnGUI()
{
if(somethingIsTrue)
{
if(GUI.Button(new Rect(0, 0, 64, 64), “ClickMe”)
{
DoSomething();
}
}
}