Issue with returning integers

[JustRedTTG]

It's trying to use assign on Val but Val only has _assign and no it doesn't fix the issue

Exception ignored from cffi callback <function handle_args at 0x779894456af0>:
Traceback (most recent call last):
  File "/home/red/PPG/moss-desktop/.venv/lib/python3.9/site-packages/extism/extism.py", line 842, in handle_args
    HOST_FN_REGISTRY[idx](CurrentPlugin(current), inp, outp, *udata)
  File "/home/red/PPG/moss-desktop/.venv/lib/python3.9/site-packages/extism/extism.py", line 390, in __call__
    return self.func(*args, **kwargs)
  File "/home/red/PPG/moss-desktop/.venv/lib/python3.9/site-packages/extism/extism.py", line 421, in inner_func
    emplace(plugin, slot, result)
  File "/home/red/PPG/moss-desktop/.venv/lib/python3.9/site-packages/extism/extism.py", line 333, in <lambda>
    return [(ValType.I64, lambda _, slot, value: slot.assign(value))]
AttributeError: 'Val' object has no attribute 'assign'

After a bit of tinkering, this is a secondary issue I encountered:

Traceback (most recent call last):
  File "/home/red/PPG/moss-desktop/gui/extensions/extension_manager.py", line 153, in load_wasm_source
    extension.call('moss_extension_register', self.state,
  File "/home/red/PPG/moss-desktop/.venv/lib/python3.9/site-packages/extism/extism.py", line 543, in call
    self._check_error(
  File "/home/red/PPG/moss-desktop/.venv/lib/python3.9/site-packages/extism/extism.py", line 515, in _check_error
    raise Error(_ffi.string(error).decode())

on all extism versions.
python: 3.9 and 3.13
rust-pdk wasi but I think it's python extism that is broken