The "Function Tools for Response Simulation" Tool is not working in NX 8.5. I think it is a Java (JRE) problem as indicated in NX Cast 8.5.
I've updated the latest Java 7 v45 and also added UGII_JVM_OPTIONS=-Xmx64M in ugii_env.dat file (also noted on Cast) but nothing happened. The "Function Tools for Response Simulation" command is not working.
Also NX 8.0 is already installed on my computer and this command works properly on it.
The toolkit requires Java. Starting with nx8.5 you need to define where java is installed.
That’s probably why your tool is not working anymore. So you not only need to install java but also inform NX where it’s installed.
This can be done as environment variable on your system UGII_JVM_LIBRARY_DIR
On my system this is: UGII_JVM_LIBRARY_DIR=C:\apps\Java\jre7x64\bin\server