I need to add validation so that the user can only select the values from the dynamic table
I think this is what you want?
Set the style of the ComboBox
to fmStyleDropDownList
Private Sub UserForm_Initialize()
ComboBox1.Style = fmStyleDropDownList
If Range("converter").Count = 1 Then
ComboBox1.AddItem "0"
Else
ComboBox1.List = Application.Transpose(Range("converter"))
End If
End Sub
This will ensure that the user has to select an item from the list.