# Design Patterns and Best Practices ## Section under development This section covers proven design patterns that will allow you to build quick solid apps in BetterForms. ### Code Goals * Readable * Debuggable * Reusable * Performant ### Globals It is not recommended to use `$$Globals` within your hook scripts unless you have a specific purpose and fully understand their implications. Often with client based solutions ( FileMaker only apps) we use globals for various environmental values. This can have negative unwanted effects in BF hooks. There really is not any advantage to using globals on BF hooks unless you are writing hook based scripts yourself. #### Why you shouldn't I use globals in hooks? The CWP session that BF uses can often be reused and often from a different user. If you do not have excellent clean up and instantiation practices with your globals, these value can be passed to other BF hooks that are run and create a security issue. #### But BF uses globals ... ? The BetterForms hooks do use globals but they are managed very carefully and this is an excellent use case for them. By using a global for the hook data there is no need to pass parameters around through the various scripts. The globals are also instantiated at the beginning of every script so it is safe. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.klai.studio/v1/usage/design-patterns-and-debugging.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.