If you duplicate in the elements panel, if you change in one it will change in all.
It you duplicate in the library, then you can change something and it will be reflected only in the symbol you choose in the library.
You can also use the same symbol and code the text with an array for example.
let me know if it is what you want to do.
I will let you know. of-course, but first let me thank for your immediate reply
One more thing. The code that was in the original symbol disappear in the duplicate one......
I should not disappear. Strange.
If you duplicate a symbol in the library or elsewhere, it should not change anything.