A question about dimension parameter

I have items like that:
```
[{
   someField1:"someValue",
   someField2:"someValue",
   coordinate: [0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, ...]  //more than 100 dimensions
}, 
....
]
```

What I have to set in dimension parameter for correct work?