[drools-user] Problem with the import

[Eliane Daghfal]

Hello,
i'm having the following problem, i want to use a dataSet in a function in the 
drl file.So, i'm doing the following:

<import>System</import>
  <import>System.Data</import>
  <dotnet:functions>
    public void ExtractFromDB()
    {
                DataSet dSet = new DataSet ();
    }
  </dotnet:functions>

<rule name="REA Rule">
    <parameter identifier="test">
      <dotnet:class>System.String</dotnet:class>
        </parameter>
        <dotnet:condition> test.Equals("test")</dotnet:condition>
        <dotnet:consequence>
                ExtractFromDB();
                Console.WriteLine("the dataset is true");
        </dotnet:consequence>
  </rule>
  </rule-set>


But, i have this error : 
The type or namespace name 'DataSet' could not be found (are you missing a 
using directive or an assembly reference?)

Thanks for ur help, 

--

Eliane Daghfal