Automatic dashed bar line in compound time signatures

[Edward Andrews-Hodgson]

Hi there

I'm transcribing some music which has a compound time signature (3/4 + 3/8).  I've managed to set the set the beaming using

\set Timing.beatStructure = #'(2 2 2 3)

But I'd also like to have an automatic dashed bar line before the three quavers at the end of the bar.  Is this possible?

Many thanks

Edward