nested ng-tables with common filtering and sorting - angularjs

Question

I am trying to found how i can have a table with nested table or second level data. With ng-repeat-start i create the desired ui result but i can't do sorting and filtering in nested data
html code is :
<table ng-table="list.tableParams"
class="table table-condensed table-bordered table-striped">
<tr ng-repeat-start="row in $data">
<td data-title="'Name'" sortable="'name'" filter="{name: 'text'}">
<span ng-if="row.data.length > 0" class="glyphicon"
ng-class="{ 'glyphicon-chevron-right': !row.hideRows, 'glyphicon-chevron-down': row.hideRows }"
ng-click="row.hideRows=!row.hideRows"></span> {{row.name}}
</td>
<td data-title="'Age'" filter="{age: 'number'}">{{row.age}}</td>
<td data-title="'Money'" filter="{money: 'number'}">{{row.money}}</td>
<td data-title="'Country'" filter="{ country: 'select'}"
filter-data="list.countries">{{row.country}}</td>
</tr>
<tr ng-hide="!row.hideRows" ng-repeat="sub in row.data">
<td style="padding-left: 50px" filter="{name: 'text'}">{{sub.name}}<br />
<td>{{sub.age}} members</td>
<td>{{sub.money}}</td>
<td>{{row.country}}</td>
</tr>
<tr ng-repeat-end></tr>
and my data and table params are :
vm.simpleList =[{"name":"Karen","age":45,"money":798,"country":"Czech Republic",
data:[{"name":"lala","age":59,"money":523,"country":"American Samoa"},
{"name":"aaa","age":56,"money":540,"country":"Canada"},
{"name":"Cat","age":57,"money":746,"country":"China"},
{"name":"Christian","age":59,"money":572,"country":"Canada"},
{"name":"Tony","age":60,"money":649,"country":"Japan"},
{"name":"Cat","age":47,"money":675,"country":"Denmark"}]},
{"name":"Cat","age":49,"money":749,"country":"Czech Republic"},
{"name":"Bismark","age":48,"money":672,"country":"Denmark"},
{"name":"Markus","age":41,"money":695,"country":"Costa Rica"},
{"name":"Anthony","age":45,"money":559,"country":"Japan"},
{"name":"Alex","age":55,"money":645,"country":"Czech Republic"},
{"name":"Stephane","age":57,"money":662,"country":"Japan"},
{"name":"Alex","age":59,"money":523,"country":"American Samoa"},
{"name":"Tony","age":56,"money":540,"country":"Canada"},
{"name":"Cat","age":57,"money":746,"country":"China"},
{"name":"Christian","age":59,"money":572,"country":"Canada"},
{"name":"Tony","age":60,"money":649,"country":"Japan"},
{"name":"Cat","age":47,"money":675,"country":"Denmark"},
{"name":"Stephane","age":50,"money":674,"country":"China"},
{"name":"Markus","age":40,"money":549,"country":"Portugal"},
{"name":"Anthony","age":53,"money":660,"country":"Bahamas"},
{"name":"Stephane","age":54,"money":549,"country":"China"},
{"name":"Karen","age":50,"money":611,"country":"American Samoa"},
{"name":"Therese","age":53,"money":754,"country":"China"},
{"name":"Bismark","age":49,"money":791,"country":"Canada"},
{"name":"Daraek","age":56,"money":640,"country":"Costa Rica"},
{"name":"Tony","age":43,"money":674,"country":"Canada"},
{"name":"Karen","age":47,"money":700,"country":"Portugal"},
{"name":"lala","age":0,"money":0,"country":null}];
vm.tableParams = new NgTableParams({
sorting: {name: "asc"},
count: 5
}, {
counts: [],
dataset: vm.simpleList
});
I can't found anywhere an example or a way to do that. If i have nested tables like this :
<table ng-table="list.tableParams">
<tr ng-repeat-start="row in $data">
<!-- td's -->
<td data-title="'Name'" sortable="'name'" filter="{name, data.name: 'text'}">
<span ng-if="row.data.length > 0" class="glyphicon"
ng-class="{ 'glyphicon-chevron-right': !row.hideRows, 'glyphicon-chevron-down': row.hideRows }"
ng-click="list.createNestedTable(row)"></span> {{row.name}}
</td>
<td data-title="'Age'" filter="{age: 'number'}">{{row.age}}</td>
<td data-title="'Money'" filter="{money: 'number'}">{{row.money}}</td>
<td data-title="'Country'" filter="{country: 'select'}"
filter-data="list.countries">{{row.country}}</td>
</tr>
<tr ng-repeat-end ng-hide="!row.hideRows" >
<td>
<table ng-table="list.tableParams2">
<tr ng-repeat="sub in $data">
<td style="padding-left: 50px" filter="{name: 'text'}" sortable="'name'">{{sub.name}}<br />
<td filter="{age: 'number'}" sortable="'age'">{{sub.age}}</td>
<td filter="{money: 'number'}" sortable="'money'">{{sub.money}}</td>
<td filter="{country: 'select'}" sortable="'country'">{{row.country}}</td>
</tr>
</table>
</td>
</tr>
</table>
How can i make filtering in both columns name and data.name (nested data) from the common external filtering? Something like that : filter="{name, data.name: 'text'}"