Hello, I need help here. I found this magic Atomic Integer expression and read a little about this and, I think, I used that properly in line 52. But problem is in Req(1) and rest Req(2,3,4,5) good. But when I comment line 50,53 (if condition) then Req(1,2) is good and rest Req(3,4,5) fail. And I am not sure that synchronized expression is needed (line 45).