i changed the trick, and i use variable 'x' as the accumulator of the result for each line in the selection, here are some examples:

example 1. mark the column with the 'x+1' on the code below, and press ctrl+e

- Code: Select all
`arr[x+1] -> arr[1]`

arr[x+1] -> arr[2]

arr[x+1] -> arr[3]

arr[x+1] -> arr[4]

example 2.

- Code: Select all
`random() -> 0.215884125091`

x -> 0.215884125091

sin(1.2) -> 0.932039085967

1+2+3 -> 6

34*5.5 -> 187.0

"x" * 10 -> xxxxxxxxxx

len("abracadabra") -> 11

x -> 11 # the result of previous len is assigned to x

x*2 -> 22 # the result of previous line is multiplied by 2