toggling checkbox's enabled field in datagrid

I've inherited some code to update and I could use some help.

I have an Advanced Data Grid where one column uses a custom checkbox component. It's very simple with the checkbox's selected field controlled by column's datafield, which is a Boolean named 'fired'.

I want to have the checkbox enabled only in certain situations, dependent upon a second field , an int called 'type'. Basically, enabled = (type!=0).

'type' is a field in the grid's dataprovider and I want to set the enabled field in the declaration below but I can't figure out how to reference the 'type' field.

Any guidance is appreciated!
Thanks, Carrie

    <mx:Component id="cbEditor">
    <mx:HBox horizontalAlign="center" backgroundAlpha="1" width="100%">
    <mx:Script>
    <![CDATA[
    public var selected:Boolean;
   
    ]]>
    </mx:Script>
    <mx:CheckBox id="cb"  selected="{data.fired}" click="selected=data.fired=cb.selected;" width="15"/>
    </mx:HBox>
    </mx:Component>