missed to write about new default parameters

// new  parameters for default settings to set if you want to user recurring payment or not before initilizing express check out
   	public function default_settings()
	{
		return array(
			'username' => '',
			'password' => '',
			'signature' => '',
			'recurring'	=> FALSE,
			'test_mode' => FALSE,
			'amount'       => 5,
	                'frequency' => 1,
	                'period'    => "week",  //Day , Week,  SemiMonth, Month, Year
	                'goods_name' => "Account upgrade",
	                'goods_amount' =>  5,
	                'goods_qty' => 1,
			'solution_type' => array('type' => 'select', 'default' => 'Sole', 'options' => array(
				'Sole' => 'merchant_solution_type_sole',
				'Mark' => 'merchant_solution_type_mark')),
			'landing_page' => array('type' => 'select', 'default' => 'Billing', 'options' => array(
				'Billing'	=> 'merchant_landing_page_billing',
				'Login'		=> 'merchant_landing_page_login'))
		);
	}
	
	
	// new default paramerts for recurring payments
	// by default payment is set to false, you will need to set it to true while makeing purchase 
	
		'recurring'	=> FALSE,
		'amount'       => 5,
                'frequency' => 1,
                'period'    => "week",  //Day , Week,  SemiMonth, Month, Year
                'goods_name' => "Account upgrade",
                'goods_amount' =>  5,
                'goods_qty' => 1,