Can I Customize the Default Speech in Heygen’s Sample Avatar Videos

I have a question. Using your API, I can upload my own photo, video, and voice to create an avatar video using my input text. My question is: I noticed that you provide some predefined sample avatar videos through the API. These sample avatars are speaking a default script like, "Welcome to the new era of video creation with Heygen..."

I want to show these sample videos in my software as a sample Video gallery so that users can pick any sample video and use it during their avatar creation. However, the problem is that these sample videos mention "Heygen", but I don't want my users to hear that name. Instead, I want them to hear my company name.

Is there any way to change the default speech in your sample avatar videos? Or is that not possible?