characters, mathematical expressions and computed values

The code

hist(new, main=bquote("Heart Attack (" * bar(X)==.(round(mean(new), 
1)) *
")"))

does not work on 2.15.2 on OSX. the histogram is generated, but the  
title
does show at all, which kind of tells me the bquote expression is  
failing

Works fine for me. I just updated to 2.15.2 today.

Used 1:4 as the value for new and got he correct title.

I would appreciate any help in making this work, it seems it should  
be easy,
but somehow it is not. I tried using substitute, and many other ways  
with no
help

> sessionInfo()
R version 2.15.2 (2012-10-26)
Platform: i386-apple-darwin9.8.0/i386 (32-bit)

locale:
[1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base

other attached packages:
[1] survey_3.29     ggplot2_0.9.2.1

loaded via a namespace (and not attached):
  [1] colorspace_1.2-0   dichromat_1.2-4    digest_0.5.2
  [4] grid_2.15.2        gtable_0.1.1       labeling_0.1
  [7] MASS_7.3-22        memoise_0.1        munsell_0.4
[10] plyr_1.7.1         proto_0.3-9.2      RColorBrewer_1.0-5
[13] reshape2_1.2.1     scales_0.2.2       stringr_0.6.1
[16] tools_2.15.2


David Winsemius, MD
Alameda, CA, USA