Filtering XML

Hi,

I am trying to project all the XML title with the keyword “Omaha”

trace("trace = " +xml..tournaments.tournament.(name == "Omaha").toXMLString());

xml…tournaments.tournament.name works but xml…tournaments.tournament.(name == “Omaha”) does not

my xml looks like this :

<tournaments>
<tournament>
<name>$5,000 GP Rebuy Ohama</name>
<game>Holdem</game>
<buyin>10</buyin>
<start_date>2009-08-17 10:40:01</start_date>
<registration_start_date>2009-08-16 10:40:01</registration_start_date>
<registration_end_date>2009-08-17 10:40:01</registration_end_date>
<max_players>1500</max_players>
</tournament>