Again, the Trace block is only for testing purposes, it's not designed to be used to indicate something. Trace is NOT an indicator. Trace shows you the history of a value, including values such as EMPTY_VALUE or -EMPTY_VALUE.
These lines are oscillating because the values you prot are oscillating. These lines are Ask and Bid prices shifted above and below. These are not Highest or Lowest prices of something, which is the case in Donchain Channel.
I tried something, but it works for me -