# Conditional Functions

| **Function**                                                                                                                              | **Description**                                                     |
| ----------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------- |
| [Lookup](https://doc.sysdevmobile.com/kalipso5/developing/form/expressions/functions/functions-descriptions/conditional-functions/lookup) | Returns the result of a search for a record in the specified table. |
| [YesNo](https://doc.sysdevmobile.com/kalipso5/developing/form/expressions/functions/functions-descriptions/conditional-functions/yesno)   | Returns the result of a question to the user                        |