How can i make streamText reasoning output in dynamic language?

[junhyunyong]

I use streamText with google model and make sure to use dynamic language in system prompt. But always think in english.

use providerOptions like this

          providerOptions: {
            google: {
              thinkingConfig: {
                thinkingBudget: 1024,
                includeThoughts: true,
              },
            },
          },