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raju rayalaCourses Plus Student 386 Points
var id = "23188xtr"; var lastName = "Smith"; id.toUpperCase() var userName = id; userName.toUpperCae()
christian lian huat toh7,213 Points
I think you misspelled the toUpperCase() method in the userName variable :D
also you can shorten your code like this
var id = "23188xtr"; var lastName = "Smith"; var userName = id.toUpperCase();