Using dipole slap correction in Optimization

Dear all,

Have you ever try to use optimisation of asymmetric surface using the keyword dipole slab correction ? does it working ?? is there any difference in the geometry?

Actually i'm trying to optimise the slaps using this keyword but I feel it is not working... I made a comparison in optimising with and without using dipole but there is no different in bond lingth!

Any help would be appreciated

Regards,

Niveen