Efficient way to add listners?

is this the effective way to add multiple listeners or suggest new way //

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Hi @biswajitjei02n8v0iw,

If you set the listener key to a " / " then it will listen for every change across your entire database.

Note here that both DataChanged blocks on the right will create the same outcome. If you want to target a specific object then change the Realtime_DB1 Get key to your specified location.