# Parameters in expression binding **URL:** \ **Category:** Ignition\ **Created:** [April 30, 2024, 4:34pm UTC](https://forum.inductiveautomation.com/t/parameters-in-expression-binding/89719 "2024-04-30T16:34:36Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![Chris\_Adamson](https://avatars.discourse-cdn.com/v4/letter/c/90db22/32.png) [@Chris\_Adamson](https://forum.inductiveautomation.com/u/Chris_Adamson)\ **Post date:** [April 30, 2024, 4:34pm UTC](https://forum.inductiveautomation.com/t/parameters-in-expression-binding/89719/1 "2024-04-30T16:34:36Z")
![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/f/7/f7f5414a5db4d5d982e4545d71f495349caec1eb.png) This is my current script in expression. But what I would like to add to this is the ability to choose parameters based on the stand number set on page parameters ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/9/c/9cdfc76388069625faf6577ab5ef860a560ce4bc.png) I have been able to do this for all other tags I am pulling in. ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/6/3/6346addd6d6d1f87d703c4469436df770859d942.png) For the Beacon, it has 3 separate outputs to change the 0 or 1. Unless there is better way to capture 3 inputs to show which 1 of the three is active. That 3 separate tags it read to give me one answer. I would like to use the parameter ability also ---
**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\ **Post date:** [April 30, 2024, 4:43pm UTC](https://forum.inductiveautomation.com/t/parameters-in-expression-binding/89719/2 "2024-04-30T16:43:29Z")
Add additional custom properties to the component or root container. Give these custom properties indirect bindings, as in your second screenshot. Reference these _custom properties_ in your first expression, instead of the tags directly.