radio.onReceivedNumber(function (receivedNumber) {
    basic.showIcon(IconNames.Yes)
    basic.showNumber(receivedNumber)
})
basic.forever(function () {
    radio.setGroup(21)
    basic.showIcon(IconNames.Heart)
    basic.pause(5000)
    radio.setGroup(22)
    basic.showIcon(IconNames.No)
    basic.pause(5000)
})