Hey guys,
so for my addon Achievement Tracker I tried to open the achievement screen (within the journal) when the user clicks on a tracked achievement within my tracker window.
After a long search, the following did what I needed:
Lua Code:
SCENE_MANAGER:Show("achievements")
This does exactly the same as pressing J and selecting the Achievement-Tab, all in one line.
Finding the correct parameter is a bit trail and error I presume, or if you have access to the original lua files, there's ingamescenes.lua which is a great help.
Hope it helps.