Problem with destroying model

Hi, I would like to delete differents models from collections and restart from id 1 but it doesn't work. For instance i have some contacts (collection) and information's values for each one. I can delete a contact but the values no.

Here is my controller

function deleteContact(e) {
 
    if ($model) {
        var contact_id = $model.id;
    }
 
    var contact = contacts.get(contact_id);
    var fieldvalues = Alloy.Collections.fieldvalue.where({contact_id: contact_id});
    var listvalues = Alloy.Collections.listvalue.where({contact_id: contact_id});
 
    for (var key = 0; key < fieldvalues.length; key++) {
        if(fieldvalues) {
            fieldvalues[key].destroy();
        }
    }
 
    for(var key = 0; key < listvalues.length; key++) {
        if(listvalues) {
            listvalues[key].destroy();
        }
    }
 
    Alloy.Collections.fieldvalue.fetch();
    Alloy.Collections.listvalue.fetch();
    contact.destroy();
    contacts.fetch();
}

when i delete the contact and add a new one the last one take the previous one id that i want. I would like to do the same with values whiches are differents models containing contact_id.