I select in hollow cube box properties to invisible but not select passable , and player and enemy can walk trough that wall , when I set that cube to visible it is not passable , but I wish that player and enemy cant walk trough that invisible block . I Remember that I use this before ( think in A6 ) just select invisible and leave passable unselected and player cant walk trough block ...
please help , now I use A 8.03 and lite c .

yes, an invisible block gets removed
set all surfaces to none and try again

it work , thanks man.