How to chose a line from a list

Hey guys,
I have a problem. I don't know how to chose a line from a list and I have to chose the red values โ€‹โ€‹of the pixel of costume current block.
How do you do that?

Thanks for helping :slight_smile:

Do you just want a list of all the red values? If so, here's how to do it

You can use [scratchblocks](item(1 v)of([columns v]of[]::list[/scratchblocks] to get the red values.

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