.kv is not binding to updates in properties of elements of a dictionary

If my app has a dictionary called dict, which say looks something like this :

dict = DictProperty({'k':Button()})

Then say in my .kv file I have

<Label>:
    text: app.dict['k'].text

then the labels text doesn’t get updated when the buttons text is updated.

If this is not a bug, I’m hoping it can be implemented for it to update when the button’s text changes.

[ecerulm]

Nowadays, this will work also

text: (app.dict).get(‘k’).text

note: the parentheses around the property. This syntax allows for “unconventional” keys like .@id which won’t work with the dot notation. (e.g (app.dict).get('.@id') works while app.dict..@id won’t work)

[aleferna12]

Nowadays, this will work also

text: (app.dict).get(‘k’).text

note: the parentheses around the property. This syntax allows for “unconventional” keys like .@id which won’t work with the dot notation. (e.g (app.dict).get('.@id') works while app.dict..@id won’t work)

Is this syntax documented anywhere? I would like to understand better how the bindables are created from KV files