Problems preseeding with no swap space

[MaTa <emfamandraescriure@gmail.com>]

Hi

I'm preseeding a Lenny 5.0.1 installation, with a partman configuration without swap space. I need to skip the "no-swapspace" confirmation.
I tried with this lines:
partman-basicfilesystems    partman-basicfilesystems/no_swap    boolean    true
partman-basicfilesystems    partman-basicfilesystems/create_swap_failed    error    

And partman fall in a infinite loop in all cases.
I have tried in "new" and parted HDD with the same results.
Please, can anybody help me?

Thanks and sorry for my poor english
Oriol