Add additional field to picker

Hi.

I need to add some additional fields to picker page.

Something like this:

This is checkbox field is added on classification picker:

in Windchill\codebase\netmarkets\jsp\structuredenumerationpicker\structuredEnumerationTreePicker.jsp

<jca:renderPropertyPanel>

    <w:checkBox name="ptsCreateNumberFromClassification" label="${numberFromClassificationCheckboxLabel}" renderLabel="true" renderLabelOnRight="true"/>

</jca:renderPropertyPanel>

How can i pass this checkbox value to picker callback function?

Request in Windchill\codebase\netmarkets\jsp\structuredenumerationpicker\structuredEnumerationPicker_dataFetcher.jsp does not have this property.

Thanks.