Creating a subset list from a larger list, based on a different parallel list

[Dave]

Hi everyone,

I'm fairly new to app inventor, and I'm having some trouble wrapping my head around this problem.

I'm making something similar to the blocks below, trying to create a list (HeadsOnly) which only includes the names of people who got Heads in the Coin Result.

I've tried fiddling around with the "for each number" block as well, but I'm still not getting it.

Any help would be fantastic.

Also, if it matters, the way the rest of my program is set up, I can't change the layout of the original lists.

Thanks in advance (hopefully)!

[Italo]

The "item" you are using to point to the name is not the index, it's the item ("Head" or "Tail").

There's a block in the lists section called INDEX IN LIST (thing, list) but you'll need to use a different way of getting the index number from the CoinResult list because you have repetitive items and it will give the wrong index number.

If I were you I would use a FOR EACH NUMBER block instead the FOR EACH item IN LIST block. That way you can increment the index number and use it in both lists.

[Italo]

This way:

[Dave]

Thank you Italo, you're a champion!