Er...yea, if you're using rpgmaker xp, then in your "show message" type \N[_]
(replace _ with a number, which should match up the Hero List...meaning Arshes is normally 1 and Basil is normally 2.)
sorta like this...
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after changing name and stuff....assuming the new name is now Bob and the character whose name was changed was the first.
(do a show message event)
Hello \N[1]!
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the message will show up to be "Hello Bob!"