using perl extenstions from scripts

[Michael Traxler]

Hi,

I'm trying to automate the setup of urxvt-perl-extenstions via scripts, so for
example open some tabs in tabbedex and give them names.

Reading the manual I would guess that I have to do something like this:

echo -n "\033]777;tabbedex:new_tab\007"

according to this place in the manual:
"
Ps = 777   Call the perl extension with the given string, which
should be of the form extension:parameters (Compile perl).
"

Unfortunately, this doesn't have any effect.

Can you help me how to do this right?

Thanks,

Michael