i have form1 and form2..both are loaded..i click in form2's button and then i want that form1.text's gonna be "hi"...how do i do that?

i tryed dim mform1 as new form1()
form1.text = "hi"
but its quite obvious that it didnt work cuz that would only work with a new form...not an already created one...so..how do i do this?