I have there domain classes:

:: Person. (Person.ID, Name,Address) :: Designation.(Designation.ID, Title, Band) :: SalarySlip (Person.ID, Designation.ID, totalIncome, Tax etc etc.)

In the update method the person controller when I assign a person a designation from a list of designation values I want to insert a new record inside SalarySlip.

Something like:

def update = {
   def SalarySlipInstance = new SalarySlip()
   SalarySlipInstance.Person.ID = Params.ID //is this correct?
   SalarySlipInstance.Designation.ID = ?? //since the value is coming from a list. How can I bind this field?
}

Much Appreciated,

Thanks,
WB