List with brackets

MIT App Inventor Help
1

This is my block and output, what kind of list have I ? how can I eliminate brackets ?

blocks
blocks1326×551 37.4 KB

2

You have a list lijke this:

[[1],[2],[3]]

you will need to flatten the list to remove the rounded brackets

3

Thank you, but I don't understand "flatten"

4

an example

image

3 Likes
5

Thanks, it runs well

1 Like
6

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