Nagios 2.10 with embedded perl

Hi!

I’ve installed nagios 2.10, and since we’re upgrading, we thought to implement the embedded perl for this occasion.
So, I ran the configure with the “–enable-embedded-perl --with-perlcache” options as indicated and re-compiled nagios.

Once done, when I try to insert theses lines
enable_embedded_perl=1
use_embedded_perl_implicitly=1
in nagios.cfg, I get:
Line 1124 (UNKNOWN VARIABLE)
(line 1124 refers to the enable_embedded_perl=1 line)

So, is there anything wrong with nagios 2.10 ? Has anyone been able to use embedded perl with it ?
Or can someone help me to solve this problem ?

Thanks in advance!