Single String to Array

I have a product table containing product code, name and a singe image url.
I am using the Stripe Create Product step https://stripe.com/docs/api/products/create

I can create a product using the server connect, but I would like to include my single image url as a Stripe product image using the data picker. But this needs to be Posted as an Array.

   "queryProducts":[
      {
         "id":1035,
         "code":"SKU1",
         "name":"Product 1",
         "active":"Y",
         "image":"https://www.myimageurl/1.png"
      }
]

My steps are simple

database query
repeat query
   exec
      steps
          stripe create product     
          update database

Invalid array",“stack”:"Error: Invalid array\n at Function.generate (/opt/node_app/node_modules/stripe/lib/Error.js:40:16)\n

Is there an extra step I can add to include the image?
Thanks in advance.