Open Form with Parameters

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VB

i have a DLL file (myForms.DLL) file which contains one form (form1),
with overloads show, with one parameter like this:

Public Overloads Sub Show(ByVal Data As dataTable)
......
end Sub


and, i have an EXE Project without reference for DLL, i want to open the form1 which exist in myForms.DLL in EXE Project. I loaded the myForms.DLL assembley and get the form1 like this:
.....
.....
dim f as form = CType(Activator.CreateInstance(typ), Form)

now, i want to show the form with parameter:

dim mydata as new datatabe
f.show(mydata)

my problem is, the form can not identify the Parameter or Overloads Show() and always Show the original form. How can i open this form with parameter?

thanx