microbit Running LED with Array

let list: number[] = []
let value = 0
list = [0, 1, 2, 3, 4, 14, 24, 34, 44, 43, 42, 41, 40, 30, 20, 10]
basic.forever(() => {
    for (let value of list) {
        led.plot(value / 10, value % 10)
        basic.pause(100)
    }
    for (let value of list) {
        led.unplot(value / 10, value % 10)
        basic.pause(100)
    }
})