[R] pch as single character

[Troels Ring]

Dear friends - using windows xp and R1.6.1
when doing
x <- 12
as.character(x)
[1] "12"
plot(1,2,pch=as.character(x))
the interesting point is marked with: 1 whereas I would like to see 12.
In par() is specified under pch:
Either an integer specifying a symbol or a single character to be used as 
the default in plotting points
How is that overridden ?

Best wishes
Troels
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