If you have chosen the no-code development solution, it is not recommended to add custom functions. The firmware functions within the module are fixed, and after adding functions, the module's firmware will not be able to recognize them. Additionally, if the panel does not support it, the added custom functions will not be displayed. If the no-code development solution does not meet your needs, you can select a product type without the "no-code development" label on the page to create your own product.