Hi DarioCrivelli, sorry for another question..I'm currently testing on DynaMetapushTable, it work nicely (except the grouping feature), and when I changed to MultiDynaMetapushTable, the web client was not able to display the pushed data. I can see the table row was expanded without displaying any of the pushed data. Following is the code on my client page:
<table>
<tr align="center" class="greenbar">
<td width="10%">LEAGUE</td>
<td width="11%">TIME</td>
<td width="11%">SCORE</td>
<td width="28%">EVENT</td>
<td width="18%">PRICE</td>
<td width="18%">PRICE2</td>
</tr>
<tr id="news" source="lightstreamer">
<td align="center" width="10%"><div source="lightstreamer" field="3">Loading...</div></td>
<td align="center" width="11%"><span source="lightstreamer" field="4">Loading...</span></td>
<td align="center" width="11%"><span source="lightstreamer" field="5">Loading...</span></td>
<td width="28%">
<table width="100%" border="0" cellpadding="0" cellspacing="0" class="table_noline">
<tr><td align="left"><span source="lightstreamer" field="6">Loading...</span></td></tr>
<tr><td align="left"><span source="lightstreamer" field="7">Loading...</span></td></tr>
</table>
</td>
<td width="18%">
<table width="100%" border="0" cellpadding="0" cellspacing="0" class="table_noline">
<tr><td align="left"><span source="lightstreamer" field="8">Loading...</span></td><td align="right"><span source="lightstreamer" field="10">Loading...</span></td></tr>
<tr><td align="left"><span source="lightstreamer" field="9">Loading...</span></td><td align="right"><span source="lightstreamer" field="11">Loading...</span></td></tr></table>
</td>
<td width="18%">
<table width="100%" border="0" cellpadding="0" cellspacing="0" class="table_noline">
<tr><td align="left"><span source="lightstreamer" field="12">Loading...</span></td><td align="right"><span source="lightstreamer" field="13">Loading...</span></td></tr>
<tr><td align="left"></td><td align="right"><span source="lightstreamer" field="14">Loading...</span></td></tr></table>
</td>
</tr>
</table>

<script>
var schema = ["command","key","eventid"];
var undschema = ["sfe","datetime","score","teama","teamb","hhandica p","ahandicap","home","away","overunder","over","u nder","bgcolor"];
var group = ["news"];
var mode = "COMMAND";
//var schemaCommand = "key command sfe datetime score teama teamb hhandicap ahandicap home away overunder over under bgcolor";

//var commandTable = new DynaMetapushTable("NewUser", schemaCommand, "COMMAND");
var commandTable = new MultiDynaMetapushTable(group, schema, mode, undschema);
//TABLE
commandTable.setSnapshotRequired(true);
commandTable.setRequestedMaxFrequency(0.5);
//VISUALTABLE
commandTable.isPushedHtmlEnabled(true);
commandTable.setPushedHtmlEnabled(true);
commandTable.setClearOnDisconnected(true);
commandTable.setClearOnRemove(true);
commandTable.setClearOnAdd(true);
//DYNAMETAPUSHTABLE
commandTable.onChangingValues = formatValues;
commandTable.onItemUpdate = updateItem;
commandTable.setMaxDynaRows("unlimited");
commandTable.setMetapushFields(2, 1);
commandTable.setMetapushSort(4, true);

lsPage.addTable(commandTable, "news");
</script>

adapters.xml:
<?xml version="1.0" ?>
- <adapters_conf id="RBMS_Demo">
- <metadata_provider>
<adapter_class>com.lightstreamer.adapters.metadata .LiteralBasedProvider</adapter_class>
</metadata_provider>
- <data_provider>
<adapter_class>com.lightstreamer.adapters.remote.d ata.NetworkedDataProvider</adapter_class>
<param name="request_reply_port">1001</param>
<param name="notify_port">1002</param>
</data_provider>
</adapters_conf>

I'm actually just change the Table type to MultiDynaMetapushtable and the schema. When I try pushing data to the client, the table row is expanding but without any data display. Just wondering if I miss anything or set something wrong on the adapters/web client/the push application (the push application is written in vb.net by referring to the .net hello world example).