JavascriptBridge: Post a message to a parent window

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Godot Version

4.3

Question

Hello everyone,
I’m trying to send a message to the parent window from the iframe of my exported godot project. A certain AI told me, that I could use JavascriptBridge to postMessage the String up to the parent window, but the eventListener there isn’t receiving anything and I don’t trust chatGPT with gdscript much.
Does anyone know if it’s this piece of code in the godot project or the event Listener that’s not working?

func onRoomEntered():
	print("Yo, you entered the room:" + roomname)
	JavaScriptBridge.eval("window.postMessage('" + roomname + "', '*');")

Thanks in advance :slight_smile: