for example i have a list A [1, 2, 3, 4, 5, 6 ]
item (1, 4) of list A => A [1, 2, 3, 4]
for example i have a list A [1, 2, 3, 4, 5, 6 ]
item (1, 4) of list A => A [1, 2, 3, 4]
Yup, just use a list of the item numbers you want as the first input.

it doesnt work т-т
Works perfectly. You asked for items 1 and 3, and that's what you got. If you wanted items 1, 2, and 3, that's what you have to ask for.
yep