error with uppercase characters array

[dotruong1990]

assign data = [
88 => "something"
]
{% assign getkey = '88' %}
{% assign getKey = '88' %}

{{ data[getkey] }} --> working
{{ data[getKey] }} --> not working (uppercase characters "K")

[dotruong1990]

up

[sanmai]

Please feel free to address this, although I would expect some breaking changes here.

And please abstain from more "up" comments.