> ## Documentation Index
> Fetch the complete documentation index at: https://help.dingtalk.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Formula Functions

> Learn how to use YiDA Formulas to boost form-filling efficiency, reduce input errors, and customize data processing. By applying the 96 supported functions, you can implement business logic calculations and workflow automation.

This section introduces the categories of functions supported by YiDA Formulas and shows how to apply them in common form-filling scenarios.

YiDA currently supports 96 functions in total. Applying these functions flexibly offers several benefits for data collection:

* Improves form-filling efficiency

For example, if the score is 90 or above, the grade is A; otherwise, it is B. Once the score is entered, the formula automatically determines the grade (A or B).

* Reduces errors

For example, current stock quantity = inbound quantity - outbound quantity. Once the inbound and outbound quantities are entered, the formula automatically calculates the current stock quantity, preventing manual calculation errors.