Omise Installment Payment API Integration- Woocomerce wordpress - Need your help guys

We have a wordpress website. Recently we applied for a payment gateway for our website from OMISE Thailand. Their plugin supports payment but to accept installment payment we need some one to integrate API. They have supported us by this to integrate:
-u pkey_test_511yxv4dtvyj3xvewee:
-d “description=Installment Payment”
-d “amount=500000”
-d “currency=thb”
-d “type=installment_kbank”
-d “installment_terms=10”

I do appreciate if someone can help us.