# How to pass over camera parameter?

**URL:** <https://forum.webosose.org/t/how-to-pass-over-camera-parameter/1532>\
**Category:** Univ Colllab - Christ Univ\
**Created:** [August 2, 2021, 1:45pm UTC](https://forum.webosose.org/t/how-to-pass-over-camera-parameter/1532 "2021-08-02T13:45:23Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![ANIAN\_ahn](https://yyz1.discourse-cdn.com/flex031/user_avatar/forum.webosose.org/anian_ahn/32/535_2.png) [@ANIAN\_ahn](https://forum.webosose.org/u/ANIAN_ahn)\
**Post date:** [August 2, 2021, 1:45pm UTC](https://forum.webosose.org/t/how-to-pass-over-camera-parameter/1532/1 "2021-08-02T13:45:23Z")

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I want to use the camera function in the app, but I don't know how to pass over the parameters.

```
var camera='luna://com.webos.service.camera2/getCameraList';
var camerapar='{}';

var cameraopen='luna://com.webos.service.camera2/open';
var cameraopenpar='{"id":"camera1"}';

bridge.call(camera,camerapar);
bridge.call(cameraopen,cameraopenpar);
var camerapreview='luna://com.webos.service.camera2/startPreview'; 
var camerapreviewpar='{ "handle":3917, "params": {"type":"sharedmemory","source":"0"}}';
bridge.call(camerapreview,camerapreviewpar);

```

I tried in this way, but I'm having a difficulty delivering the handle parameters, how can I solve it?

---

<div class="post-metadata">

**Author:** ![charleskelvin](https://yyz1.discourse-cdn.com/flex031/user_avatar/forum.webosose.org/charleskelvin/32/563_2.png) [@charleskelvin](https://forum.webosose.org/u/charleskelvin)\
**Post date:** [August 3, 2021, 8:42am UTC](https://forum.webosose.org/t/how-to-pass-over-camera-parameter/1532/2 "2021-08-03T08:42:08Z")

</div>

@ANIAN_ahn  
Refer to this code snippet. you will need a callback function

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