It shall not be possible for the user to select a list nested inside another property recursively and provide index values.

For example:

str_prop: get_property ( complex prop, list_str, 0)

str_prop: get_property (complex_prop, list_complex, 0, str_prop)

str_prop: get_property (complex_prop, list_complex, 0, list_str, 0)

Basically any path than can be followed that ends up with a property of the same type as the property being set