using fd:on-value-changed ???

[Мария Григорьева]

Hello!!! I'm trying to update form data, using on-value-changed:

 

<fd:field id="density" required="true">

                <fd:label>Плотность</fd:label>

                <fd:datatype base="decimal"/>

                <fd:on-value-changed> 

                               <javascript>

                                               var value = this.value;

                                               var test =
cocoon.parameters["comp_id"];

                                               var sql = "update
compositions set density = " + value + " where id = " + test;

                                               dao.dbi.execute(sql);

                               </javascript>

                </fd:on-value-changed>

  </fd:field>

 

But as output I've got the exception:

 

java.sql.SQLException: ORA-00904: "UNDEFINED": invalid identifier

 

What's the problem ?