Dialogflow cx how to set more than one parameter in same user input using entities

[pmatias]

I'm trying to set two different parameters on the same page using two different entities. In this case, I want to capture the car and year model. It seems that it's not possible because only one parameter has been updated, even though the user input contains all the information. How can I deal with this? I can't find anything related to this in the documents.