Set different value and label for Check Component on Pentaho CDE

Question

I am retrieving data from a datasource like this:

 VALUE | LABEL
-------+-----------
 'ES'  | 'Spain'
 'IT'  | 'Italy'
 'FR'  | 'France'
  ...  |  ...

I want my Check Component to show values on the label column, but use values on the value column instead as the component's own Parameter's value, so if a user selects 'Spain', my countries parameter adds 'ES' to the list of countries. It has to end up being something like this:

<input ... value="ES">
<label ...>Spain</label>

So far, I know if I provide a static list on the Values array property for the component, this will work. But I can't figure out how to achieve the same thing via my dynamic datasource.

Please don't suggest to hack it after rendering with some jQuery or the like, I want to know if Pentaho CDE provides a way to do this properly.

Update: Providing a static list won't work. No matter what you put on the Arg and Value columns, only the Value will be used. But I found out why, and I wrote the answer :)

Answer 1

I found the answer, just in case someone falls into the same dumb mistake.

There is an option for the component, called Value as Id. When set as false, provided there are two columns on the datasource for this component, the first column will be used as value for the checkbox input, and the second column will be used as text for the label element.

So my original dataset worked when I set Value as Id as false.