php - Call to a member function on a non-object

hello there,
I am getting this error (Call to a member function on a non-object)

I am able to render the captcha and see it on the webpage.. when I click on submit form it checks with ajax if all fields have text in it.. then if they do then it checks if the captcha was successfully entered or not by calling validate() and that's were I have the issue saying scoreResult() from ayah is non-object..

whats going on here I have tried maybe 100 different things for the past 5 hours with no luck.

require_once("ayah.php");

class field_captcha extends FormField
{
	public function validate($value)
	{
		global $ayah;
		$score = false;

		$score = $this->ayah->scoreResult();
		if ($score){
			$score = true;
		}

		if (!$score) {
			throw new FormFieldValidationException('incorrect_value');
		}

		return false;
	}


	public function render( array $params = null, Form $form = null )
	{
		$ayah = new AYAH();
		$oldCaptcha = '<input type="hidden" name="captcha[value]" value="test123">';
		$NewCaptcha = $ayah->getPublisherHTML();

		return $oldCaptcha."\n\n".$NewCaptcha;
	}
}

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