GST on Commission from company outside India.

Dear Sir/Madam, I am working as a commission agent for a company in Europe. I help them in selling the product in India. They submit the offer, Customer place the order on Principle directly. Principle supply the goods & collects the money. In return they pay me commission on it. Now under export of services Export of services’ means the supply of any service when,– The supplier of service is located in India; - Yes I am located in India. The recipient of service is located outside India; - Yes The company is located in Europe The place of supply of service is outside India; - Yes I supply service to principle not to customer in India. the payment for such service has been received by the supplier of service in convertible foreign exchange; and--- Yes they pay in EURO the supplier of service The recipient of service are not merely establishments of a distinct person in accordance with Explanation 1 in Section 8 of IGST Act - Yes we are not related. So should i required to pay GST on commission i receive from them or submit letter of undertaking to tax authority? Regards Yogesh