# Parameters

Description of expression parameters is shown below. 

* **Name:** contains symbolic name of the expression.
* **DataType:** specifies the type of data to be returned.
* **Code**: contains the JavaScript code of the expression.
* **Triggers:** indicates a set of triggers that lead to code execution.
* **Imports:** contains the set of imported modules.
* **Comment:** contains a custom comment.

Most of the parameters described above are available as OPC UA items. More information about editing server object properties via OPC UA is described[ ](https://docs.monokot.io/hc/en-us/articles/360034746391)[<mark style="color:blue;">here</mark>](https://docs.monokot.io/basics/opc-ua/access-to-object-settings).