Passing data betwen forms listbox help

[PoorBoy]

i have form1 and form2

With form1 still open when form2 opens:

In the Open event of form2:
Me.listbox2.RowSource = Form_form1.listbox1.RowSource

when i add this code in i get "openform action was canceled"

Private sub Add_click()      <<< form 1
Form_form2.list2.RowSource = Me.list1.RowSource
DoCmd.OpenForm ..., Me.listbox1.RowSource
Me.comboboxname.RowSource = Me.OpenArgs
End sub

Note: listbox1 is a table/query type
lsitbox2 is value list type

how do i get rid of the error "the openform action was canceled"???

[June7]

Is this your actual code and form and control names? I assume the ellipses (...) are not really in the code.

The combobox is actually named comboboxname? Is the combobox on Form2?