I have read in documentation that if you want to get access to some object property you should use . notation:
If the variable references an object, to access a specific field in the object, use the dot notation; i.e.
But in my case, i dont know the key. I have some variable, for example $$this.field that store my object key.
And if i try to do $$variable[$$this.field] i have an error:
contains an invalid character for a variable name: ‘[’
So, how to read object key dynamically?