String interpolation in header/body transforms

We can currently set a header to a key metadata, using the $tyk_meta variable. Is there any way to set a header to an interpolated value?

So for example, say you have the country, and language metadata on a key, can you set a header to ${tyk_meta.language}-${}?

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Not yet, I don;t think the parser will handle more than one entry per header, but it’s a great idea.