# If

Control under which circumstances an Action Node or a set of nodes should be executed. You may add conditions to the `IF` node, and you may add Action Nodes as children of the `IF` node. If the condition is evaluated as `true`, all Action Nodes inside will trigger. You may also add `IF` nodes inside another `IF` node, for more complex evaluation or control of the Action flow.

The If action node requires only a Condition to be set up. 

* Data Binding: Select a property (must be a boolean type property) holding TRUE or FALSE. The If will evaluate to TRUE depending on the property you select for Data Binding.
* Condition: Use the [Condition Editor](https://docs.appfarm.io/reference/platform-concepts/conditions) to set up a logical expression. The If will evaluate to TRUE is this expression evaluates to TRUE.
* Function: Use the [Function Editor](https://docs.appfarm.io/reference/platform-concepts/functions) to set up an advanced expression. You may use Javascript inside the Function Editor. The function must return either TRUE or FALSE.