unknow line in msgbox

You could just add a vbCR and the additional text you want to the msgbox line like so:

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sorry i'm not english so probably i do not make myself clear, let'us say that there are 31 "avvisofinale", i' d like to see in a message box 30 line , and on each line the content of "avvisofinale"
in my situation ,as in the attachement,
5
10
15
20
25
30
35
...
145

If I understand you right, then I would not use avvisofinale as a Variant.
Use it as a string and build your message box...

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Then just display avvisofinale in the message box (which may be rather large with 145 lines).

great , thank for your help !!