How can I save the published user data in rtabmap database to use them for visualization in localization mode?

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I am trying to generate a map of the environment with markers for visualization. I followed the wifi signal publishing method and successfully implemented visualizing arrows in some poses of the trajectory. However, I need to save all the marker locations in the rtabmap database as I need these markers with the map to run the robot in the localization mode. But it seems the markers are not saved in the rtabmap database. How can I solve this?