I am curious about pre-visualisation in terms of royalties

I love using UE4 and had a question in terms of advertising and selling a product. If I were to make a digital version (for marketing purposes) of a product I am going to physically construct and sell, would I still owe royalties for that product once it starts selling? As an example, let’s say I display a 3d model of a shampoo bottle on my website and that product begins to sell well, Do I owe royalties to Unreal because my initial design was done in UE4? I am a bit confused on this because the product that would actually be making money is something that exists in the real world but is based off of something digital I created. I hope this wasn’t too confusing!