Error in Course "R Programming", Lesson 4 "Vectors"

[ItsdMeSoFYou]

In Lesson 4 or R Programming, Swirl asks me to

| To add (or 'concatenate') your name to the end of my_char, use the c() function like this: c(my_char, "your_name_here"). Place your name in double quotes where I've put "your_name_here". Try it now, storing the result in a new
| variable called my_name.

But it refuses to mark my answers as right, even though I actually copy and pasted the hint.

[ItsdMeSoFYou]

I was able to proceed by typing

my_name <- c(my_char, "your_name_here")