Impute missing values using aregImpute

I have a data frame with 61 columns. Some data is missing. I read in Steyerberg's book about aregImpute in Hmisc. I used it with standard parameters and all columns of my data frame as formula.

g <- aregImpute(formula = ~ ..., n.impute=5, data=d)

b <- data.frame(rsq=g$rsq, y=attributes(g$rsq))