Setting Environment Variable CPIC_MAX_CONV

Hi Experts,

In of  the steps during POST INSTALLATION of PI7.0 it says to set the variable CPIC_MAX_CONV, using the transaction RZ10.

When i logged in to the abap system , and checked in RZ10,did find any variable of this name.

Do I need to create it first and then set the value gw/max_conn_per_wp.

If yes, give me the steps to do this. or else any other alternative.

Thanks in advance,

Younus