on current of a different form

I want to call the "On Current" event of another form.

I have a parent(mainform) form and then I have a subform(CurrentForm) and in that subform(CurrentForm) I have another subform(mysubtab01). From the mySubTab01, I want to call the On Current of the parent form. How can i do this?

This is an example of how I am setting the record source of the deepest subform where I want to call the parent on current from:

Forms(mainform)(CurrentForm)(mySubTab01).Form.Reco rdSource = "Select * from subQrytab03"

on current of a different form