public function getMerchantOrderParamValue($orderIndex = 0, $paramIndex = 0)
    {
        $orderParam = $this->getMerchantOrderParams($orderIndex);
        return array_key_exists('value', $orderParam[$paramIndex]) ? $orderParam[$paramIndex]['value'] : null;
    }
public function getMerchantOrderParamValue($orderIndex = 0, $paramIndex = 0)
    {
        $orderParam = $this->getMerchantOrderParams($orderIndex);
        return array_key_exists('value', $orderParam[$paramIndex]) ? $orderParam[$paramIndex]['value'] : null;
    }
public function getMerchantOrderParamValue ( $ orderIndex = 0 , $ paramIndex = 0 ) { $ orderParam = $ this -> getMerchantOrderParams ( $ orderIndex ) ; return array_key_exists ( 'value' , $ orderParam [ $ paramIndex ] ) ? $ orderParam [ $ paramIndex ] [ 'value' ] : null ; }
Value of additional merchant parameter

@param int $orderIndex
@param int $paramIndex
@return mixed|null
Value of additional merchant parameter