valueKey

Combo data key to associate as value.
It is used only for combo field.

Example

tbar: [{
  type: 'combo',
  label: 'Country',
  name: 'country',
  data: [
	{index: 0, country: 'USA'},
	{index: 1, country: 'Canada'}
  ],
  displayKey: 'country',
  valueKey: 'index',
  value: 0
}]
...

Default

undefined