Pricing Plan Coupon only for first billing cycle (programmatically)

Question:
How can I change the code, so that the generated coupon code only applies to the first billing cycle?

Product:
Wix Editor, Wix Pricing Plans, Wix Marketing Backend

What are you trying to achieve:
I’m trying to create a coupon programmatically with a fixed amount of payment cycles it can be applied to a pricing plan. At the moment, when I use it in checkout, it’s applied to all billing cycles of the pricing plan.

What have you already tried:

This code:

export function initCouponCreating(amountOff, couponCode) {
    let couponInfo = {
        "name": "Gutschrift",
        "code": couponCode,
        "startTime": new Date(),
        "usageLimit": 1,
        "limitedToOneItem": true,
        "limitPerCustomer": 1,
        "active": true,
        "scope": {
            "namespace": "pricingPlans"
        },
        "moneyOffAmount": amountOff
    };
    return coupons.createCoupon(couponInfo);
}

But I can’t seem to find the option to set it only to the first payment cycle.

@thomasj , @yisrael-wix any ideas?