When a L2 wants to introduce as the same level that L1, people aren’t agree at the first time. So, the most important thing that we need to reach the plurilingualism is to prepare our minds for change.
Plurilingualism will contribute to the integration of citizens, their participation, culture and values, allowing them to take on their responsibilities and exercise their rights as members of society. But in Spain, this change in attitude is being very slow. Spanish people not acquire and use the language in different context or in different ways. This is the consequence to learn over this kind of education during years. This is the result of learning a language with a method that has made people not to use the L2 in different contexts and situations.
To sum up, I believe that we need change the methodology learning a L2 to achieve effective plurilingualism. They have to teach how develop and use.