fly speed , increasing speed

hello everyone,i'm trying to use SacFree flight script ,and i have this script attached to cube,and i have camera attached to cube too, i can fly in the same speed but i want to increase my speed while i'm going down. And i tried something to do this: when i'm going straight i looked to my Rotation X and it was around +5 , and when i started flying down my rotation x was more than for example 15 ( here what i mean : http://ressim.net/s/upload/7f79072b.png )

so i tried something like this:

if (transform.rotation.x > 15) {

print("you are going down "); }

but nothing was written on the console, which if statement need i use to do this. Please help.

And here is the script, also what should i use to increase my speed in the right if statement. ( note speed increases when i increase acceleration and max speed )

var YawSpeed = 30.0; var TurnSpeed = 30.0; var ElevateSpeed = 16; var Acceleration = 30; var MaxSpeed = 120; private var Speed = 0.0;

function Update(){

if(Speed >= MaxSpeed){Speed=MaxSpeed;}

if(Speed <= (MaxSpeed / 3)){ rigidbody.useGravity = true; }else{rigidbody.useGravity = false;}

transform.Translate(Vector3.forward Speed Time.deltaTime);

if(Input.GetAxis("Accelerate")){Speed = Speed + Acceleration;} if(Input.GetAxis("Decelerate")){Speed = Speed - Acceleration;}

transform.Rotate(0,Input.GetAxis("Yaw") YawSpeed Time.deltaTime,0); transform.Rotate(0,0,Input.GetAxis("Turn") TurnSpeed Time.deltaTime); transform.Rotate(Input.GetAxis("Elevate") * ElevateSpeed 2 Time.deltaTime,0,0);

if (transform.rotation.x > 20) {

print("you are going down "); }

}