XML Filter with several WFS feature types

Hi everyone,

I'm trying to read WFS Datas. In order to have a smaller flow, I use a XML Filter.

But I just ask for two Feature Type, I get no features and the following message :

Here is the XML Filter I use :

<Filter xmlns="http://www.opengis.net/fes/2.0"><PropertyIsEqualTo><ValueReference>WM_VERSION</ValueReference><Literal>0</Literal></PropertyIsEqualTo></Filter>

Is there something wrong with it ?

I could get a WFS Reader with its XML Filter per Feature Type, but it will be boring ;o)

Many thanks if you can help me !