2D game score

Hello,

I am creating a 2D game with falling objects which you have to catch. But now I want to update my score when I catch them.
I have a score script and a UI text.

This is my c# score script:

public Text scoreText;
public int krolschValue;

private int score;

void start () {
	score = 0;
	UpdateScore ();
}

void onTriggerEnter2D () {
	score += krolschValue;
	UpdateScore ();
}

void UpdateScore () {
	scoreText.text = "Score:

" + score;
}
}

On the onTriggerEnter2D my Value should be updated by one. But it does not show on the screen.
I have no errors so I have no idea what the problem is…

Bram

Uppercase O on OnCollisionEnter2D