Toggle Button - Visibility

How to make a DYNAMIC TEXT invinsible at the begining and toggle the view accordingly.

The Important thing is - I need the text to be invinsible at the begining. The main thing behind my need is WHEN the user GO FORWARD and BACKWARD in the main timeline the visibility of the text box should be unchanged unless the user decide to change it’s visibility by clicking “chk_tbtn1” button.

In the code below every time the user go backward in timeline, it makes the txt box invinsible.

_root.my_Dyn_Txt1._visible = false
this.chk_tbtn1.onRelease = function() {
_root.my_Dyn_Txt1._visible = !_root.my_Dyn_Txt1._visible;