>HI ALL,
> I want to one form pass the variable to other form , but i can't do it , but i not use mdiparent is ok
>..... i want to use mdi form to pass the variable , how can i do?
>I main form use MDI form ....
>

>     Dim Quotation_Add As New Quotation_Add
>        Quotation_Add.MdiParent = Me
>        Quotation_Add.Show()
>------------------------------------------
>Method 1, is not work only blank
>
>    Public Property findericmaspass() As String
>        Get
>            Return Me.IcmasPass
>        End Get
>        Set(ByVal value As String)
>            Me.IcmasPass = value
>            TextBox1.Text = value
>        End Set
>    End Property
>---------------------------------------
>Method 2, is not work only blank
>
>storageAdvice.TextBox1.Text = "aaa"

I'm not clear from your code exactly what you want. Based on a guess:

Dim storageAdvice As Quotation_Add
'Create the form:
storageAdvice = New Quotation_Add
storageAdvice.MdiParent = Me
storageAdvice.Show()
storageAdvice.TextBox1.Text = "aaa"

Just make sure that storageAdvice is defined with sufficient scope if you want to access it from elsewhere in the parent form.