x++ trick how to overide EDT relation lookup in ax 2012

Hi Daxer's,

Recently, I have gone through weird requirement,

Scenario: Customer need is to customize lookup filter values of an ItemId EDT in SysQueryForm

public void executeQuery()

{

    QueryBuildDataSource itemidBuildDataSource;

    itemidBuildDataSource = this.query().dataSourceTable(tableNum(InventTable));

    itemidBuildDataSource.addRange(fieldnum(InventTable,ItemType)).value(SysQuery::value(ItemType::Item));

    super();

}

void closeSelect(str p1 )

{

    p1 = Inventtable_ItemId.text();

    super(p1);

}