Problem with visible = true & visible = false

programming flash
1 
my_Dyn_Txt1._visible = false
cb1.onRelease=function()
{  if(this._currentframe==1)
 {   _root.my_Dyn_Txt1._visible = true
  this.nextFrame()
 }
 else
 {   _root.my_Dyn_Txt1._visible = false
  this.prevFrame()
 }
}

When the checkbox (cb1) is clicked the “my_Dyn_Txt1” is visible. The problem I’m having is - when I move forwad and back in my frames the checkboxes which were clicked are not visible due to

my_Dyn_Txt1._visible = false

How can I make (“my_Dyn_Txt1”), a clicked checkbox STAY VISIBLE even after I move forwad and back in my FLA frames?