Scalogram plot confidence interval

I made a scalogram in the signal analyzer and now I'm trying to add the 5% significance levels like in this picture with the black lines around the red and yellow portion:

How do I do this? I've tried looking online, but can't find anything telling me how to do so. I've attached the scalogram I made.

Answer 1

[Yueqian Ma]

I managed to find a package in matlab that allows me to do everything I wanted:

http://grinsted.github.io/wavelet-coherence/