What's your basis for that claim about the new lights?

How to say “What's your basis for that claim about the new lights?” in Japanese

In Japanese

新(あたら)しい照明(しょうめい)についてのその主張(しゅちょう)、何(なに)を根拠(こんきょ)にしてるの？

Atarashii shōmei ni tsuite no sono shuchō, nani o konkyo ni shiteru no?

What's your basis for that claim about the new lights? in other languages