Why "PropertyBinding" dosen't work with the "Checked" property of "

In a Windows form project I have 2 simple CheckBoxs whose Checked propertys are bound to the same user scope seting "test1" using the Application Settings > PropertyBinding in the form designer. Then I added a MenuStrip with an ToolStripMenuItem "checkme" whose Checked property is also bound to the seting "test1", and set the "checkme" 's CheckOnClick with true. When it runs, the 2 CheckBoxs always work perfect, but not the "checkme". The "checkme" never go with the other 2 CheckBoxs, why?
[558 byte] By [FanZai] at [2007-12-22]
# 1

I must have post this in a wrong subject. Thanks for moving it here.

now, i do need someone's help. Thank you.

FanZai at 2007-8-30 > top of Msdn Tech,Windows Forms,Windows Forms Designer...