** By Renan K.C. ** Help with the code.URGENT! *ENGLISH*

Next, I am trying to make a game of those things that go down and you control the character to get these things and thus make points. But I am having problems getting a value of OnCreatedScene, for a function used in OnSceneUpdate.

Here is the code for the callbacks of an object that falls on the OnCreatedScene

Void ETHConstructorCallback_boost (ETHEntity @ boost)
{
Boost.SetUInt ("boostActive", 0);

}

Void ETHCallback_boost (ETHEntity @ boost)
{
Float vBoost = UnitsPerSecond (400.0f);
Boost.AddToPositionY (vBoost);

// If the collision is real it is deleted
If (boost.GetUInt ("contact")! = 0)
{
DeleteEntity (boost);

// Activate the boost state;
Boost.SetUInt ("boostActive", 1);

}
Here is the code that "catches" the value of the boostActive and printa it in OnSceneUpdate

ETHEntity @boost = SeekEntity ("boost.ent");
Print (boost.GetUInt ("boostActive"));

And the error message I get.

Exception: Null pointer access
Callstack:
Void updateClassic () (Classic.angelscript, 436)

If someone could help me with urgency I would be very grateful!