Arrays can be created with the "Add" action like in my previous message. Maybe there should be a more intuitive way (I didn't think about it). I guess arrays are usually filled from 0 to N so it makes ...

Calling ToJSON (GlobalVarToJSON, etc.) can cause a error, which will result in missing frame logic which can cause all sorts of bugs. An array really shouldn't have missing keys, but in Gdevelop it's ...