Using filters in OpenForm macro action.

Using a series of buttons one one form (A) to open another form (B). The buttons on A are all using the OpenForm action and are filtering form B through the use of queries. Form A itself is based on a query.

I know that a control value can be used to filter form B but do not want to put text boxes on form A to achieve this and given that there is the potential for form A to have a lot of buttons I need to find a less long winded way of filtering the form.

I only need to filter one field in form B to achieve what I want. Should I try and input an SQL Where clause into the other action argument. If so, would I only need to state the field I want to limit or all fields on form A.

Or can I put a simple expression in the Filter field like [Forms].[FormName].[FieldName] = ValueIWant.

Cheers
Tim