Set nested option by XPath

Apparently only non-nested option fields can be set/selected using an XPath.
In this case I have an addon that should use ‘None’ on an option except when a field in import data is set to ‘yes’. But this isn’t possible because the option is a nested field (https://www.wpallimport.com/documentation/addon-dev/nested-fields/) and there is no such option for setting the field by XPath when the option contains other options.