It is not clear to me what you want to do.
If you want to add the country to the existing folder name, then there is an action example in the FAQs:
Please note that %dummy% does not work in actions of the type "Format value" or in a way it does but it always returns an empty string.
If you want to get the field COUNTRY filled with data from the folder name, then the type of action is not correct but you have to use "Guess value".
Also see here: