How to get peoples names to show up on server messages

Just a bit stuck again, If i was to have the persons name come up in the message, so for instance “Welcome (Name)” How would i get then name in a message the server is saying in Chat, I’ve got the server working so that it is like posted below:

function handlePlayerJoin(playerID)
SendChatMessage(-1, " Welcome to the Server Name! Please Join the Discord: link")
end

– event name your function name
RegisterEvent(“onPlayerJoin”, “handlePlayerJoin”)

How would i get it so it says peoples names? Many thanks!
How