cannot pass global variable to control textbox

Question

i am kind of new to visual basic programming. it's nice to see this forum and maybe you guys can help me. I am using visual basic 2005. here is my problem: 
i have to pass a global variable to a control textbox. but after running the code the textbox is empty:

here is how it should happen:

 Private Sub cmdEdit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdEdit.Click

        frmsearchdialogbox.Show()

    End Sub

 
'search dialog box appears
'type code then click search

 Private Sub cmdsearch_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdsearch.Click

        With study

            Try

                If study.selectstudy(Me.txtsearchdiag.Text) = True Then

                    temp.load_data()

                    Me.Close()

                End If

            Catch ex As Exception

                MsgBox(MSG_ERR)

            End Try

        End With

    End Sub

'here is what temp.load_data looks like

Public Function load_data() As Boolean

        ACTION_INDICATOR = 2

        Try

            txtcode.Enabled = True

            txtdescription.Enabled = True

            txtid.Text = gvtemp.gvID

            txtcode.Text = gvtemp.gvCode

            txtdescription.Text = gvtemp.gvDescription

            load_data = True

            Exit Function

            load_data = False

        Catch err As Exception

            MsgBox(MSG_ERR)

        End Try

     

    End Function

but after running the code... txtid, txtcode, and txtdescription is empty. what can be wrong?

i really need help! thanks guys!