Indexed properties in tags within iterate

[Philippe Laflamme]

Hi,
Is this legal:
<update id="createDynamicTable" parameterClass="dynamicTableDefinition">
CREATE TABLE a_dynamic_table
  <iterate property="columnList" open="(" close=")" conjuction=",">
    $columnList[].name$
      <isEqual property="columnList[].type" compareValue="int">
        INTEGER NULL
      </isEqual>
      <isEqual property="columnList[].type" compareValue="double">
        DOUBLE NULL
      </isEqual>
  </iterate>
</update>
As you might expect, I'm trying to build a dynamic table from a 
java.util.List of beans each with a "name" and "type" property.

Currently, I'm getting an expection when iBatis (2.0.9) is trying to 
access the "columnList[].type" value in the isEqual tag. Is this sort of 
construct legal?

Thanks,
Philippe
Here are parts of the stacktrace that might be helpful:
[...]
--- The error occurred in dynamicTable.xml.
--- The error occurred while preparing the mapped statement for execution.
--- Check the createDynamicTable.
--- Check the parameter map.
[...]
Caused by: com.ibatis.common.beans.ProbeException: Error getting ordinal 
list from JavaBean. Cause java.lang.NumberFormatException: For input 
string: ""
Caused by: java.lang.NumberFormatException: For input string: ""
	at com.ibatis.common.beans.BaseProbe.getIndexedProperty(BaseProbe.java:80)
	at 
com.ibatis.common.beans.JavaBeanProbe.getProperty(JavaBeanProbe.java:261)
	at com.ibatis.common.beans.JavaBeanProbe.getObject(JavaBeanProbe.java:245)
	at com.ibatis.common.beans.GenericProbe.getObject(GenericProbe.java:55)
	at 
com.ibatis.sqlmap.engine.mapping.sql.dynamic.elements.ConditionalTagHandler.compare(ConditionalTagHandler.java:60)
	at 
com.ibatis.sqlmap.engine.mapping.sql.dynamic.elements.IsEqualTagHandler.isCondition(IsEqualTagHandler.java:21)
	at 
com.ibatis.sqlmap.engine.mapping.sql.dynamic.elements.ConditionalTagHandler.doStartFragment(ConditionalTagHandler.java:40)
	at 
com.ibatis.sqlmap.engine.mapping.sql.dynamic.DynamicSql.processBodyChildren(DynamicSql.java:129)
	at 
com.ibatis.sqlmap.engine.mapping.sql.dynamic.DynamicSql.processBodyChildren(DynamicSql.java:138)
	at 
com.ibatis.sqlmap.engine.mapping.sql.dynamic.DynamicSql.processBodyChildren(DynamicSql.java:99)
	at 
com.ibatis.sqlmap.engine.mapping.sql.dynamic.DynamicSql.process(DynamicSql.java:79)
	at 
com.ibatis.sqlmap.engine.mapping.sql.dynamic.DynamicSql.getParameterMap(DynamicSql.java:61)
	at 
com.ibatis.sqlmap.engine.mapping.statement.GeneralStatement.executeUpdate(GeneralStatement.java:55)
	... 27 more