Call A Button Click On Another Form

Hello everyone!

I need to call the button_click procedure for a button on a form (button1), from another form, if you see what I mean!.

Basically the user opens form1. They click a button which opens form2. Once they have finished on form2 they press the close button, which is the point where I need to call the button1_click procedure on form1.

I imagine it's something like this:

Call Forms![frmForm1]![button1]![Click] or
Call Forms.[frmForm1].[button1_Click()]

But no matter what syntax I try it just won't work!
They're very basic forms, with only 2 buttons on and basic commands.

Any help appreciated!

Thanks