RZ10 Parameter icm/HTTP/mod_ not available

Hi experts,

according to this topic:

http://help.sap.com/saphelp_nw73ehp1/helpdata/de/48/9266acaa6b17cee10000000a421937/content.htm?frameset=/de/48/9266faaa6b17cee10000000a421937/frameset.htm

There should be a parameter called icm/HTTP/mod_<XX> available on NW 7.31.

But I can't find it in the parameter list (F4: icm*) of transaction RZ10.

If i try to add the parameter manually to the profile parameters configuration, save the configuration and restart the system, the parameter disappears from the profile parameters.

Any ideas?

System:

SAP NW 7.31

Regards