Set the Cashier language at runtime by posting a SET_LANGUAGE message. The SDK forwards it to the Cashier iframe — whether you post it before or after open().
window.postMessage({ type: "SET_LANGUAGE", data: { language: "tr" } }, "*");
window.postMessage({ type: "SET_LANGUAGE", data: { language: "en" } }, "*");
window.postMessage({ type: "SET_LANGUAGE", data: { language: "de" } }, "*");- Posted before opening: stored and sent once the Cashier loads.
- Posted after opening: forwarded immediately.
ℹ️ Note: Use a language code agreed with your Omno integration team — it must be one the Cashier supports.