While cycle
var boActSet = TheApplication().GetBusObject("ABO Bulk Request");
var bcActSet = boActSet.GetBusComp("ABO Bulk Request Action Set");
var IsRecord;
with (bcActSet)
{
ClearToQuery();
ActivateField("Due Date");
SetSearchSpec("Bulk Request Id", '12345');
ExecuteQuery(ForwardOnly);
IsRecord = FirstRecord();
while(IsRecord)
{
SetFieldValue("Due Date", 'xx');
WriteRecord();
IsRecord = NextRecord();
}
}