[scli] Definition of <regexp>?

Hello,

I'm trying to disable port number 1 on a HP ProCurve 2524 switch with this command:

# scli -v 2c -c 'set interface status 1 down' 192.168.1.244 control

It works by opening ports 1, 10-19 and 21. It seems that I'm not able to control the <regexp> mentioned in the manual.

Can someone give me a pointer as how to specify port number 1 and none other? My angle is Perl, but it seems that I'm not able to apply any of my knowledge as inferior it may be :-/

scli version is 0.2.12 on Debian Sarge (stable).