I solved just adding a comma to separe the name of each States. I just edited the file: plugins/vmshipment/weight_countries/tmpl/default.php
At this line, I added a comma at the end of: "$country->country_name" before ";", and I added also a string with a comma: ', ', always before of ";".
See the example down here:
[...]
foreach($viewData['method']->countries as $virtuemart_country_id){
$country = $countryM->getData($virtuemart_country_id);
echo $country->country_name, ', '; // <<<---------------------- comma and ', ' added here, after ";"
//vmdebug('my country ',$country);
}
[...]
Thank you