radio.onReceivedString(function (receivedString) {
    basic.showString(receivedString)
    if (receivedString == "OK") {
        done = 1
    } else {
        done = 0
    }
})
let x = 0
let done = 0
basic.showIcon(IconNames.Heart)
radio.setGroup(1)
basic.forever(function () {
    x = 0
    for (let index = 0; index < 9; index++) {
        basic.showNumber(x)
        radio.sendNumber(x)
        basic.pause(2000)
        done = 0
        while (done == 0) {
            basic.showIcon(IconNames.No)
            basic.pause(1000)
        }
        basic.showIcon(IconNames.Heart)
        x += 1
    }
})