yui: dataTable - add params.id

I have a table PROJECT.
I have a table HOUR to record hours for each project

My project static hasMany = [hours:Hour]
My hour static belongsTo = [project:Project]

To link to all items of hours that belong to a project:

In the detail.list, I used

gui:dataTable id="myDataTable"

controller="hour"

action="byProjectJSON"

columnDefs

however, the params.id is not preserved....

so I need to add the params.id here in order to select the project:


params='[id:"${params.id}"]'
sortedBy="person"draggableColumns="true"

the following posts had enlightened me:

http://n4.nabble.com/gui-dataTable-td1461918.html
http://stackoverflow.com/questions/689375/yui-datatable-howto-have-just-one-paginator