how to change batch count in serverless comfyUI?

Hey folks, I am using ComfyUI serverless, where I am loading prompts[more than 10 prompts at a time] from a local txt file and trying to generate a latent image batch size of 4 in one go. That is, one prompt should generate 4 images, but it only works if I change ComfyUI batch count [attached in image]; otherwise, it only loads one prompt, and it gets idle. Since the serverless ComfyUI has no such feature to set batch count, is there any way to make it happen, or do I have to request the endpoint multiple times? Thanks, any help is appreciated.