Make custom export from Custom Module

[abocanegrab]

Good day everyone. I´m new around here and new using SugarCRM.

Using the Module Build, I made a module calls Alumni. That works great, my problem is with the export.

I want to make a custom export from a custom module. This picture explain my problem



I hace a session who save the fields selected, I need to know where use that session to select only those fields.

Thanks for your help, and sorry for my bad english. I speak spanish.

Thanks!

[abocanegrab]

Anybody please???
I need to complete this system in a few days.

Thanks all a lot!