How to create subgrids in xfdtd v6

Hello to everyone!

how can i create a subgrid in xfdtd v6? the manual doest mention anyhting about them..

hi gouzou,u can make subgrid in the adaptive mesh grid after determination of x,y and z main cell size

Added after 6 minutes:

for u see that file of patch antenna

hm.......
i use version 6.0.6.3 and can't find "adaptive mesh grid" anywhere ...

isn't supported or do i have a limited version?