I need to code this **`VLOOKUP`** macro to read from:

Column `(A:B)` of the "Reach" sheet, and then apply those values into 

Column `"L"` of the `"TV"` sheet using Column `"A"` as a unique identifier.

`=VLOOKUP(A2,Reach!A:B,2,FALSE)` would be the code Excel code I would enter into Column `"L"` of the `"TV"` Sheet.

```
With ThisWorkbook.Sheets("TV")
    .Range("L2").Formula = "=VLOOKUP(A2,Reach!A:B,2,FALSE)"
End With

```

This is the code that I have tried, but it only fills in the L2 cell. 

How would I get this to apply to the whole column?