Mixture of country_code and sub_code not valid

[jakehoare]

Hi If I set geo = c("US", "US-AL") then there is an error "Country code not valid.".
Each code works separately.
Is that a constraint by Google that the geo codes must all be country_codes or all sub_codes and cannot be some of both?
Or could the function check that each code is either a country_code or sub_code?
This is gtrendsR version 1.9.9.0
Thanks!