Newly defined arrays not picked up in var list when also setting existing array

If I have an array defined,

```python
>>> arr = ndtest((2, 3))
```
then type **in a single (multi-line) command**  in the console:
```
>>> arr2 = arr + 1
>>> arr3 = arr2 * 2
>>> arr['a1'] = 0
```

arr2 and arr3 do not appear in the list.

If I do just:
```
arr2 = arr + 1
arr3 = arr2 * 2
```
it works.