The Style "Chinese Standard GB/T7714.ens" should be updated as soon as possible

I have a chinese publication with cation instructions in Chinese Standard “Information and documentation—Rules for bibliographic references and citations to information resources”(Standard No. GB/T 7714-2015) require this:

text[1-2]texttext[3-6]texttexttexttext[2,5]text

but the outcome of style offered in endnote website

http://endnote.com/downloads/style/chinese-standard-gbt7714-numeric
http://endnote.com/downloads/style/chinese-standard-gbt7114-author-year

is that 

text[1,2]texttext[3-6]texttexttexttext[2,5]text

The style seems out-of-date to satisfy the require above.

So how to make the [1,2]convet to [1-2], how to solve this problem?

Thanks a lot.