Array of pointer to objects [closed]

I'm using C#. I have a certain number of Newtonsoft.Json.Linq.JArray, let's say A123, A124, A125, and so on. I need to create an array or something similar of this objects in a way that, if I do something on one element of this array, is as doing in to my original objects. Thank you.

struct Product {
    public JArray A1;
    public JArray A2;
    public JArray A3;
    public JArray A4;
};
       
Product  obj=new Product();
       
JArray[] vj=new JArray[4]{obj.A1, obj.A2, obj.A3, obj.A4};

Now, I'm doing:

obj.A1=new JArray(){1,2,3,4,5};
obj.A1.Add("testo");

for every single object.

But I'd like to replace with something like this:

vj[0]=new JArray(){1,2,3,4,5};
vj[0].Add("testo");
vj[1]=new JArray(){3,5,2,3,4};
vj[1].Add("testo");
vj[2]=new JArray(){2,3,4,5,6};
vj[2].Add("testo");
vj[3]=new JArray(){2,2,3,4,5};
vj[3].Add("testo");

but if I do this, the original object, obj.A1 obj.A2 and so on, remain null. So I'm looking for a way to have, let's say, an array of pointers to JArray