problem in ARCHICAD 10 ABOUT SLAB

[Anonymous]

HI ALL

I HAVE A PROBLEM IN SLAB
MY SLAB IN LOCK IN 30 CM
WHY ? I WANT TO CHANGE IT BUT I CANT ?
PLZ HELP

[TomWaltz]

You have a composite slab selected (next to "Cut Fill"), which has its thickness assigned to is already. You can either edit the composite slab (under Options > )Attribute Settings) or you can pick a simple slab fill and set it to any thickness you want.