How to create arrays of TVector3

Roofit and RooStats
1

for (int i=0; i<10; i++)
{
TVector3 ni;
}

this isn’t posible in root…

is there any way to create arrays of vectors?
I dont want to make n1, n2, n3, n4, n5… step by step I wanna loop to do that for me.

2

If it is possible in C++ it is possible in ROOT.

3

is there any way to create array of TVector3 class?