# OmniGraph | ROS2 Camera Helper wrong simulation time

**URL:** <https://forums.developer.nvidia.com/t/omnigraph-ros2-camera-helper-wrong-simulation-time/232478>\
**Category:** Isaac Sim\
**Tags:** isaacsim, ros\
**Created:** [November 1, 2022, 11:20am UTC](https://forums.developer.nvidia.com/t/omnigraph-ros2-camera-helper-wrong-simulation-time/232478 "2022-11-01T11:20:31Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![omers](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@omers](https://forums.developer.nvidia.com/u/omers)\
**Post date:** [November 1, 2022, 11:20am UTC](https://forums.developer.nvidia.com/t/omnigraph-ros2-camera-helper-wrong-simulation-time/232478/1 "2022-11-01T11:20:31Z")

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Hi,

In OmniGraph the `Isaac Read Simulation Time` has a flag for resetting the simulation time on stop. In case this flag is enabled, on every re-run of the simulation the clock starts from 0. The `ROS2 Camera Helper` node, ignores this flag, and keeps publishing timestamps without starting from 0 on every run. This causes topic sync issues.

![image](https://global.discourse-cdn.com/nvidia/original/3X/8/b/8bcf5e0e73e310de20755a255f0f90bbed492888.png)

 ![image](https://global.discourse-cdn.com/nvidia/original/3X/d/7/d76e0c40ded1263e3c979d39f71733314e081c84.png)

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**Author:** ![kyungho.yoo](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@kyungho.yoo](https://forums.developer.nvidia.com/u/kyungho.yoo)\
**Post date:** [November 28, 2022, 1:20am UTC](https://forums.developer.nvidia.com/t/omnigraph-ros2-camera-helper-wrong-simulation-time/232478/3 "2022-11-28T01:20:03Z")

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Same issue here. Will it be fixed in next release?

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**Author:** ![rthaker](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/rthaker/32/171374_2.png) [@rthaker](https://forums.developer.nvidia.com/u/rthaker)\
**Post date:** [March 28, 2023, 3:06am UTC](https://forums.developer.nvidia.com/t/omnigraph-ros2-camera-helper-wrong-simulation-time/232478/4 "2023-03-28T03:06:07Z")

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Hi - Sorry for the delay in the response. Let us know if you still having this issue with the latest Isaac Sim 2022.2.1 release.

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**Author:** ![system](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/system/32/68080_2.png) [@system](https://forums.developer.nvidia.com/u/system)\
**Post date:** [April 5, 2024, 3:37pm UTC](https://forums.developer.nvidia.com/t/omnigraph-ros2-camera-helper-wrong-simulation-time/232478/6 "2024-04-05T15:37:35Z")

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