callMeBaby.scala

@Callable(invoke)
func callMeBaby(uuid: String) = {

    if (isInWhiteList(invoke.caller) && invoke.fee == 500000) then {

        let id = extract(invoke.transactionId)
        let callerAddress = toBase58String(invoke.caller.bytes)

        ScriptResult(
            WriteSet([
                DataEntry(toBase58String(id), callerAddress + uuid)
            ]),
            TransferSet([
                ScriptTransfer(addressFromStringValue(callerAddress), invoke.fee, unit)
            ])
        )
    }
    else
        throw()
}