How to link two tables on the form via DynaLink

public void init()
{
    QueryBuildDataSource    qbdsPurchLine;
    super();
    
    qbdsPurchLine = PurchLine_DS.query().dataSourceName(tableStr(PurchLine));
    qbdsPurchLine.clearDynalinks();
    qbdsPurchLine.addDynalink(fieldNum(PurchLine, VendAccount), wblVendInfoShortView, fieldNum(wblVendInfoShortView, AccountNum));
}