XPATH XML

I have such XML:
<DATA>
<RealTime Src="REUTERS" Item="MSFT">
<Field Id="1" Name="ASK" Val="44.5" />
<Field Id="2" Name="BID" Val="45" />
<Field Id="3" Name="LAST" Val="45" />

I fetch the data this way:
var grid_model=new AW.XML.Table;
grid_model.setURL("http://localhost/grids/f.xml");
grid_model.setColumns(["@Src","@Item","RealTime//Field[@Name]"]);
grid_model.setRows('//DATA/*');
grid_model.request();

Unfortunalety the grid only displays the Src and Item and not all the other fields. Any idea why ?
Thanks

I guess in this case XPath should be like this:

grid_model.setColumns(["@Src", "@Item", "Field[@Name='ASK']/@Val", "Field[@Name='BID']/@Val", "Field[@Name='LAST']/@Val"]);

So it means that i can't loop all the Field nodes (i have many of them)
I have to manually name them...

There is no public method which sets one XPath for all cells, but there is internal variable which you can try (on your own risk :-)

grid_model._valuePath = "Field[@Name]/@Val";

or even

grid_model._valuePath = "@Src|@Item|Field[@Name]/@Val";

oops, you don't need [@Name] filter in this case, so it should be:

grid_model._valuePath = "Field/@Val";

or

grid_model._valuePath = "@Src|@Item|Field/@Val";