VLAN with mbed Ublox

Dear all and the team of MBED

I hope you can help me in my issue.

I’ve already enabled the VLAN on my ubloc-C027 but I need my board to be connected to a specific VLAN with specific ID.

How can I do that.

This really urgent for my project.
Your help will be apprecieted.

Thank you in advance

Nada