Seed random number generation in Firefly I2V

Question about randomizing the seed in Firefly Image to Video.

In Stable Diffusion, setting the seed to -1 causes it to create a random number seed for each generation. I noticed that in Firefly, the seed of -1 generates the same results each time, meaning that -1 is a value of a seed, not a code for randomizing the seed. Is there a way to automatically randomize the seed by entering a number?