Filtering Results Based on inputData

I’m building a custom integration for myself. I’m making an API call to return some shipments with tracking info. That’s all working fine. However, I want the user to be able to set a value for inputData.store_code and then the results be filtered based on their set value. For example, the unfiltered results would look like this:

{
    "sales_order_number": "SO-860444",
    "merchant_order_number": "186C-1088",
    "tracking_number": "666000987",
    "amount": "0.00",
    "shipped_via": "FedEx Home Delivery",
    "shipped_on": "2022-07-15T19:32:17Z"
  },
  {
    "sales_order_number": "SO-1042038",
    "merchant_order_number": "226C-1025",
    "tracking_number": "666000123",
    "amount": "0.00",
    "shipped_via": "FedEx Ground",
    "shipped_on": "2022-07-15T19:27:21Z"
  }

I’d want the user to set their store code to something like “186C” and then for the orders to be filtered based on that string appearing in the merchant_order_number.

What’s the best way to go about this? Was hoping to find a similar issue here in the community, but maybe I’m looking for the wrong thing.