passing ls:let down through multiple levels

from our paper:

Importantly, ls:let exists in the context of a parent. This means that the value of a ls:let cannot be passed down through grand children without having to use ls:let again. I.e.

ls:let num-turtles count turtles
ls:ask 0 [
  ls:ask 0 [
    create-turtles num-turtles ;; WILL ERROR
    ]
  ]

Rather, the modeler would need to ask its child model to re-assign the ls:let in its own context, and then pass that into its own child model – the grandchild of the original model:

ls:let num-turtles count turtles
ls:ask 0 [
  ls:let child-num-turtles num-turtles
  ls:ask 0 [
    create-turtles child-num-turtles
    ]
  ]

Any way around this?

Start by tracing how LevelSpace handles ls:let bindings across nested ls:ask contexts. Use the examples in the issue as the behavioral cases: determine whether a value can reach a grandchild without reassignment, and document or test the resulting behavior.