The bad news is that it doesn't work

I tried it few days ago and it wasn't able to create schema neither xpdo class. I tried with both options turned to 'yes' and I found 'no' and 'no' in the result fields in a grid. It had created only directories structure.
But I went through tutorial and now I'm trying to find any detailed info on how to handle different types of form elements.
1) I'd like to use regular dropdown. Currently I can build it with options from local storage, this way:
{
xtype: 'combo'
,fieldLabel: _('schedule.week_day')
,name: 'week_day'
,id: 'schedule-'+this.ident+'-week_day'
,width: 200
,lazyLoad: true
,editable: false
,mode: 'local'
,store: [[1, 'mon'], [2, 'tue']]
}
But it sends zero as value whatever selected. What could be wrong? And how do I make default value (selected and shown in the field after window loaded)?
2. Is there way to modify value shown in the grid? I have related model id's column. Sure I want to show names instead of ids. Currently I've just added another column in processor with names and I show it in the grid while ids column is hidden. I don't like this solution as I'd like to use in-row editing with combo fields. How should I make it better?
Thanks for any advices!