I wrote a guide for Neos 2.3 LTS that explains on how to do this without a custom Fusion object / Eel helper: Guide: How to select entities in the inspector (Neos 2.3 LTS)
I wrote a guide for Neos 2.3 LTS that explains on how to do this without a custom Fusion object / Eel helper: Guide: How to select entities in the inspector (Neos 2.3 LTS)