How to check if a 'Storage ' entry exists?

Tested my code once more to verify that both news.txt and news.txt\1 are recognised.
IT DOES NOT :O

var Storage = require("Storage");
l=Storage.list();
print(l);
function exists(name){
  return Boolean(Storage.open(name,"r").addr);
}
print(exists("news.txt"));
print(exists("news.txt\1"));
print(exists("nonews.txt"));
print(exists("ABC.txt"));

Output is:

[
"news.txt\1",
"weath0.txt\1",
"weath1.txt\1",
"stocks.txt\1",
"messages.txt\1",
"ABC.txt"
]
true
false
false
false

The mix of the 2 storage versions does not feel like a blessing anymore :)