Supported data types in custom functions include:

1. Integer - Integer type, values must be whole numbers

2. String - String type, enclosed in "" when used

3. BigDecimal - Numeric type

4. Boolean - Boolean type, values can only be true or false

5. Date - Date type, formatted as YYYY-MM-DD, enclosed in "" when used

6. Time - Time type, formatted as hh:mm, enclosed in "" when used

7. DateTime - Date type (specific), formatted as YYYY-MM-DD hh:mm, enclosed in "" when used

8. List - Collection type, enclosed in [] when used, with elements separated by ,

9. Map - Collection type, enclosed in [] when used, with elements separated by , and stored as key:value pairs

10. Duration - No creation interface, returned when Integer type data calls date type data

11. QueryResult - No creation interface, returned in object query APIs

12. HttpResult - No creation interface, returned in HTTP API interfaces

13. Range - Used for loop logic