r - xlab in plot() function returning error message "formal argument "xlab" matched by multiple actual arguments", and need help labeling levels in plot

Question

so I have run into an issue when trying to generate plots of a tukey test i have run on my data. Using the following code: plot(tuk.cld, las=1, col="brown", main="PPL20X10 G Dil", cex.main=.8, labels=FALSE)

I get this figure.

I would like to change the x axis label, but when I try the xlab function i get the following error message

"Error in boxplot.formula(y ~ x, data = dat, xlab = xn, ylab = yn, ...) : formal argument "xlab" matched by multiple actual arguments" and I am unsure how to proceed.

Additionally, I would Like to change the labels on the x-axis from "0:0" to "Control" and so on, does anyone know how to do this?

Answer 1

等待大神解答