Can't use nested variables on grafana-jsonapi-datasource

I am using grafana-jsonapi-datasource as a datasourse connected to my json api. But I am having trouble with nested variables, they somehow don’t work. However I can use variables without problem in a panel query for the same datasource. Are the nested variables something that need to be recognized by Grafana or is it something to be addressed from the datasource plugin?

Thank you!