public function _creditCheck($amount)
	{
		$b = $this->balance;
		$b -= $amount;
		$c = $this->credit;
		$ccheck = $b - $c;

		if ($b >= 0 && $ccheck >= 0)
		{
			return true;
		}

		$this->setError('Not enough points in user account to process transaction.');
		return false;
	}