Hi all, let me give a simple example: b<-20 I would like to print ylab as "P20" where "P" is printed in Italic font. When I do the following: plot(1, ylab=expression(paste(italic("P"),b,sep=""))) I got y axis label printed as "Pb" instead of "P20". What is the best solution to print platmath symbols with value of the variable at the same time? Thanks John