Data from subform to form

[Sadukar]

Hi All

I have created fields in my form and I want them to disply info from my sub_form.
EG. When a particular record is highlighted in my sub_form I want it to show the same info in text boxs on the form that has the sub_form within.

I can do it at a click of a button etc... But how do I get it to refresh automatically and wherte does the code go? Under general????

This is what I have on a button.

With Me.Subform_Calibración
Forms!Calibración!Intervalo = !Inter
End With

Sorry if this is a bit of a waste of your time but I have only started learning VBA recently.

Thanks for your time and patience.
S.