please help me with this code, its for matlab, please only help if you know how to do it 100% correctly

Customized greeting Write a function called PrintGreeting to insert the text "Greetings", followed by a single space, and then a name, given by the string scalar username Restrictions: PrintGreeting must use the internal fuction join. Ex userName "Emily"; welcomeMessage-PrintGreeting(userName) "Greetings Emily" Your Function Save C Reset E MATLAB Documentation 1 function welcomeMessage -PrintGreeting (userName) 2 welcomeMessage- "Greetings"; welcomeMessage- [welcomeMessage, '", userName]; end 4 Code to call your function C Reset I userName- "?????" 2 welcomeMessage - PrintGreeting (userName) Run Function Previous Assessment: Incorrect Submit Feedback