Inject Data into two different activities with the same target-global-mabox

Hello everyone,

I have two different activities (Activity A  age<40 and Activity B age>40) where we obtain the most viewed article. Currently we are injecting article data (entity.id and entity.category) by using mbox. Assuming that I am using target-global-mbox for Activity A  age<40 and Activity B age>40. How can client with age < 40 inject data into Activity A  age<40 and client with age > 40 inject data into Activity B?

Currently it seems both type of client are injecting data into the same Criteria. Any suggestion?

Thanks