Incorrect syntax error when saving string with variable in WebExtension (JSON)

[flodolo]

https://pontoon.mozilla.org/nb-NO/mozilla-vpn-extension/messages.json/?string=313410

Always turn off VPN protection for $ORIGIN$

Saving a translation, even identical to English, results in an error (translation with syntax error cannot be saved).

[flodolo]

Looks like moz-l10n and Pontoon disagree on the casing. moz-l10n is enforcing lowercase, which I don't think it's correct?

https://github.com/mozilla/moz-l10n/blob/04e6db742e9b8cb0817f8bae23e85b9c38c80864/js/src/webext-parse.ts#L40

[havarh]

The problem seems to be with the second $, not the casing of the word. If I remove the second $ the string is accepted. What I did to temporarily bypass the problem is I saved the string without the last $ having devtools open on the network tab then I did a Copy a as cURL on /translations/create/ and just added back the last $ in the data in the cURL command.