Then use the buildin block please.
I found this bug previously also, but have no idea for how to fix it 
ok, how i have to sort it? what blocks buildin
put your comparator in if socket
what to put in x and x2
x-item1 x2-item2
in fact no procedure needed here.
ok, thx
show original list and sorted list on labels and see if it's sorted.
sorted
not sorted
how did you show a list? do not use a loop.
set label1.text to origin list
label2.text to sorted list
do not use loop
Sorry, this is not right.
the if socket need a boolean value, not a number.
I don't see any one mentioning the " " around 0 in the scores column, missing from the non-zero numbers.
Could they be messing up the sort of column 2, by imposing string comparisons ('11' < '9') instead of numeric comparisons?
Right, and you can see that he uses "0" in his app. In total, he could use 0 and it won't be a problem.
In your app you are using this block with String value:
Use integer value:
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