GRIP is not being enhanced or developed since NX3 with the changes to plotting. It is considered an out-dated module. Siemens will try to keep the code from breaking in new releases of NX but will not do anything to make it work if it does break.
"Wildfires are dangerous, hard to control, and economically catastrophic."
You could CALL a subprogram written in GRIP. You could use XSPAWN to launch a program or command in another language. XSPAWN also had a concurrent or pause mode of the main program.
I have used XSPAWN to chmod file protection on a file written to the OS by my GRIP program.
"Wildfires are dangerous, hard to control, and economically catastrophic."