Combo Box Controlling Multiple Subforms

Hi,

I'm v.new to Access so do excuse my ignorance.
I have a form with a combo-box with the following values:
Trust, Course, Overseas, GP
When Trusts is selected I'ld like frmtrust_sub to appear.
When anything else is selected I'ld like frmnontrust_sub to appear
Once the data has been entered in the subform the user would continue back to the main form.
I'ld like the subforms to remain hidden until needed, if possible so as not to confuse users.

I’ve copied this piece of code and have tried pasting it into the “after update” event procedure but I get this error message

“the link masterfields property section has produced this error “Ambiguous name detected: Type_afterupdate”


Private Sub Type_AfterUpdate()

Option Compare Database

Sub ShowSubform()

'Save unsaved changes to currently open subform
DoCmd.DoMenuItem acFormBar, acRecordsMenu, acSaveRecord, , acMenuVer70

'Display appropriate subform based on Type chosen
If Type = "Trust" Then
frmtrust_sub.Visible = True
frmnontrust_sub.Visible = False

ElseIf Type = "GP" Then
frmnontrust_sub.Visible = True
frmtrust_sub.Visible = False

ElseIf Type = "Course" Then
frmnontrust_sub.Visible = True
frmtrust_sub.Visible = False

ElseIf Type = "Overseas" Then
frmnontrust_sub.Visible = True
frmtrust_sub.Visible = False

ElseIf Type = "Other" Then
frmnontrust_sub.Visible = True
frmtrust_sub.Visible = False


End If

End Sub

Private Sub cmdClose_Click()

'Close form
DoCmd.Close

End Sub

Private Sub Form_Current()

'Call subroutine to display appropriate subform based on template type
ShowSubform

End Sub

Private Sub Type_AfterUpdate()

'Call subroutine to display appropriate subform based on template type
ShowSubform

End Sub


Any help would be greatly appreciated

thanks

Barry