Strange imutable collection report error

<p>I FOUND THE **** PROBLEM!!!!!</p>
<p> </p>
<p>The problem is the Value1 of the filters!!!</p>
<p> </p>
<p>The first Dataset in the first filter:</p>
<pre class="_prettyXprint _lang-">
<oda-data-set extensionID="org.eclipse.birt.report.data.oda.jdbc.JdbcSelectDataSet" name="dsCliente" id="8">
<list-property name="filter">
<structure>
<property name="operator">eq</property>
<expression name="expr">var retorno=null;
if (params["clienteId"].value==null){
retorno = row["CLI_ID"];
}else{
retorno = row["CLI_ID"] *-1; // para ficar diferente e bloquear a linha no retorno da query
var clientes= new Array();

clientes = params["clienteId"].value.split("| ",100);

for(i=0; i&lt;clientes.length ; i++)
{
if (clientes[i] ==row["CLI_ID"])
{
retorno = row["CLI_ID"]; //deixo igual para permitir que a linha faça parte do retorno da query
}
}
}
retorno;</expression>
<simple-property-list name="value1">
<value>row["CLI_ID"]</value>
</simple-property-list>
</structure>
</list-property>
</pre>
<p>And the second Dataset in the second filter:</p>
<pre class="_prettyXprint _lang-">
<oda-data-set extensionID="org.eclipse.birt.report.data.oda.jdbc.JdbcSelectDataSet" name="dsContrato" id="6138">
<list-property name="filter">
<structure>
<property name="operator">eq</property>
<expression name="expr">var retorno=null;
if (params["clienteId"].value==null){
retorno = row["CLI_ID"];
}else{
retorno = row["CLI_ID"] *-1; // para ficar diferente e bloquear a linha no retorno da query
var clientes= new Array();

clientes = params["clienteId"].value.split("| ",100);

for(i=0; i&lt;clientes.length ; i++)
{
if (clientes[i] ==row["CLI_ID"])
{
retorno = row["CLI_ID"]; //deixo igual para permitir que a linha faça parte do retorno da query
}
}
}
retorno;</expression>
<simple-property-list name="value1">
<value>row["CLI_ID"]</value>
</simple-property-list>
</structure>
</list-property>
</pre>
<p>That's what causes the problem. Somehow Birt goes nuts when we have 2 filters, even if they are in different datasets. Apparently he thinks that the value1 is the same across all the Datasets, and when I try to use the value1 of the second filter it gives the error that I'm trying to modify an immutable list by adding another value.</p>
<p> </p>
<p>If I change the second value1 for example to value1_REMOVE it works perfectly in my webapp, but it does not work in BIRT report designer anymore...</p>
<p> </p>
<p>So, did anyone come across this problem and knows a way to fix this? As I stated this started after I migrated from JSF1 to JSF2 with icefaces.</p>