The function below is a generic function that you could implement as part of your form manager or as a function in a procedure file. From the form where you want to do something, make a call like:

oOtherForm = GetFormReference("OtherFormName")
or
oOtherForm = oFormManager.GetFormReference("OtherFormName")

Now you have an object reference to the other form and you can access any of its public PEMs as needed. Ex. oOtherForm.Refresh()

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>O.K. Now I see how it gets the "reference number" of the form that I want to operate on, but how does it work in an expression? For instance, if I want to refresh() this form, would I just say:
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>luretval.refresh()