TOP option in STRESS output request

Guys, in GLOBAL_OUTPUT-REQUEST for STRESS I try option TOP=10 to print inly 10 top von Mises stresses, but it does not work. OptiStruct prints all stresses in *.strs file. 

In Reference Guide we have

The output requests in *.fem looks like this

STRESS(OPTI,VON,TOP=10) = YES

May be, somebody can check it.  Ideally, I want to receive only one max value of von Mises stress in output file. 

Thank you!