max_treedepth argument ignored

[Famondir]

When I try to pass a list to controls to adjust the max treedepth this gets not evaluated. It claims that I need to provide a value for adapt_delta in the first place. When I provide this the model runs but treedepth is still at 10.

So just passing control=list(max_treedepth=15) to the ulam function as pointed out on page 300 does not work. Adding adapt_delta does not help to adjust the treedepth value.