Hello everyone,
basically I want to sort a numeric ListView in descending order; but I think this is not the right way
Greetings
Nicola
Try this (blocks should be draggable, click on blocks image first)
and using @Kevinkun 's solution (see below)
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You used COMPARE TEXT, which has '10' < '9' .
You want Compare Numeric.
Your blocks work perfectly (as they always do); but I add numbers manually in the ListView and not through a local variable.
use Web.DecodeJsonText('[4,8,3,9,5]'), you can change a string to a list of numbers.
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Inside the numbers local variable, I tried to replace the string of numbers to sort; with the ListView.Elements..believing that the same procedure could also order the elements of the ListView; but I was wrong. 
Don't try to work with the list Elements, use a proper list in a variable.
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Move that last assignment into the local variable scope to clear the error.
To order the list you can use the following block, there are several examples in this Community.
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Need an explanation of how to use local variables?
Meet me at the corner of Walk and Don't Walk.
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Thanks for your advice; but in the end instead of sorting the list with a specified comparator; I chose to sort the list by key, in ascending order.
Greetings
Nicola
@Juan_Antonio Crazy..I was about to make the APK..so I did the last checks; and I realize that sorting ascending doesn't work anymore
This example is similar to the one @TIMAI2 pointed me to; only in my case, the numbers to be sorted are present in a ListView. P.s: I don't understand why sorting via a key doesn't work anymore
Attach please a small aia with the data and listview
You seem to have ignored this suggestion