How to propperly load a database using the min devkit

Hi everyone! I'm Esteban and I've been using the min devkit for a little while now, getting nice results building externals using the Eigen library, however, I've never had the need to load a big chunk of data at runtime.

To be precisse, what I'd like to do is bassically to fix some data at runtime that is stored inside a (Eigen) matrix. Since, attributes can be used with this purpose when the data is a number or a string, I thought I was going to be able to put the database inside one of those, for example doing something like this:

attribute<MatrixXf> database{ this, "data base", database_maker()};

where MatrixXf is the database class and database_maker() is a function that returns a build of the database, nonetheless this does not work.

Anny help would be highly appreciated.