Yes, I did more tests and it work perfectly.
I would even say that my results on the Tigerbark are more close to 90% to initiate aerial root.
I Apply paste on dry bark, but the solid tacky one not the "liquid" version of paste, spray water and kept the tree in high humidity and Im mostly sure I will have 1 or more roots emerging from the paste in the coming weeks.
That is if you want a root at a precise spot.
As
@sorce mention its important to know if we talk about air layer or aerial roots as they are totally different.
For aerial roots I also tried to build a clear plastic tent covering only the pot and a part of the trunk where I wanted aerial roots, I kept the tent and trunk mostly wet for a fews days and aerials roots start emerging.
Now its pretty much the opposite, as aerial roots on branches doesnt go with my design I constantly have to take them off the tree as they tend to develop everywhere in no time at around 55% humidity +.
Hope it help!
Ugo