Looking at the code, it should already pull at most 30 deaths. What version of ZnoteAAC are you using?
Edit;
After some help from
@Zatjin it seems like this limitation is in
data/creaturescripts/scripts/player_death.lua
Then
local maxDeathRecords = 5
So try changing that to 10 and die 5 more times and ZnoteAAC should populate them.