refresh a Query in a subform

[gilescis]

I have a frmCustomer as a main form with a subformOrders as a sub form.
I now want to add another subform that is based on a query I build. I only want that subform to refresh (update totals) when data is entered in the subformOrders fields. I am trying to use the TimeInterval, I created a macro that just Requery. But soon as I click in the subFormOrders field, It starts to do the refresh.

Any Idea's

 

[gilescis]

Can I use the Macro Requery or do I need to write and expression code for this.