Need help for calculating 9 period cci

getSymbols('RHT')
CCI(cbind(Hi(RHT), Lo(RHT), Cl(RHT)),n=20,ma="SMA",c=0.015)

Hello All

I need some help regarding calculating 9 period cci,

I did it this way:

library(TTR)
data(ttrc)
cci <- CCI(ttrc[,c("High","Low","Close")] , ma = list("SMA", n=20), c=0.015))

Error in do.call(maType, c(list(HLC), maArgs)) :
?'what' must be a character string or a function,

Then I tried calculating ma first: this way:

ma<-SMA(ttrc[, "Close"], 9);
cci <- CCI(ttrc[9:nrow(ttrc),c("High","Low","Close")] , ma, c=0.015);

Error in if (n < 1 || n > NROW(x)) stop("Invalid 'n'") :
?missing value where TRUE/FALSE needed


Please let me know how to do this,
any help will be greatly appreciated,

thanks a lot
Bharat