Macro To Only Show Rows That Contain Specific Text/Chinese Text Issue In Visual Basic ( 2007)

I want to create 3 command buttons (active X) on a worksheet to toggle between showing rows which only contain the below text in column L (range L9:L30) and showing all rows containg the options (However, I also have some blank rows in this range and i always want them to remain hidden.)

My text options are:

High ��
Medium ����
Low ��

The text arrives in the cells via a VLOOKUP

Is the chinese text a problem? i can't type it into VB.

I've been using the following macro to hide and unhide rows with a command button in the same sheet:

Private Sub CommandButton1_Click()
Toggle_Hide_Unhide
End Sub

Sub Toggle_Hide_Unhide()
Dim rngCell As Range
Dim TakeAction As Boolean

If ActiveSheet.CommandButton1.Caption = "Hide" Then
TakeAction = True
ActiveSheet.CommandButton1.Caption = "UnHide"
Else
TakeAction = False
ActiveSheet.CommandButton1.Caption = "Hide"
End If

For Each rngCell In ActiveSheet.Range("I9:I30")
With rngCell
If .Value = 2 Then .EntireRow.Hidden = TakeAction
End With
Next rngCell
End Sub