Hello, thank you for getting in touch and for your support!
Although I'm not quite sure of what the exact issue is, since the screenshots don't reveal all the information required such as the Remap values, I would assume that the values passed through the Add node do not are not within the correct range for the effect you want to achieve.
Please try setting the "Min New" value for the Remap node connected to the Add node's B input to -1, to ensure that when the Float slider value is at 0 it subtracts that value from the gradient extracted from the World Normal Y. You might also have to place a Saturate node before the Emission port to ensure that the value range it receives is between 0 and 1.
Let me know if this helps and, in case it doesn't, please share a sample of your shader, preferably with shader, textures and material, so that I can best help you, thanks!
No problem, thank you for letting me know that the problem has been fixed!
Have you had the chance to rate and review Amplify Shader Editor? It would be awesome if you could share your experience with the Unity community, the Unity Asset Store thrives on user interaction and direct feedback. Every bit helps, your feedback is extremely valuable to us!
Feel free to get back in touch if you have further issues or questions, thanks!