Please help using R to answer this question:

A person would like to reproducibly simulate $999$ rolls of a fair six$-$sided die. He performs the following command.

rolls $<-$ replicate$($n $=999,\{$

set.seed$(1000)$

sample$(6,1)$

$\})$

What is the problem with this command? In your answer, you should first explain, and then secondly rewrite the command so that it properly reproducibly simulates $999$ rolls of a fair six$-$sided die.I