Hmmm... that patch doesn't work on my system, it demonstrates the same behaviour I mention below i.e. the quotes disappear and the object is not created. Maybe it is an incompatibility between [expr] 0.4 and my version of PD - 0.37.1 devel?
hm ... i don't think, that it's a devel issue ... the patch works fine on devel_0_38_2 ....
basically i'd suggest to use devel_0_38 instead of devel_0_37 ... it has fewer bugs and better latencies ...
cheers ... tim