AS3 stops working if the button text is changed

I have a text button work perfectly positioned within a clip and called from the main time line.

So I decided to add a color changing effect on the up state of the button. Originally, button had a static text for the Up, Dow, on, periods of success. As soon as I changed the text in an mc, I get an error code:

TypeError: Error #1009: cannot access a property or method of a null object reference.

to acolyte24A_fla::mainsite_mc_2/frame30() [acolyte24A_fla.mainsite_mc_2::frame30:4]

This is line 4 of 30 frame:

HowTo_maininfo_mc. HowTo_jtv4u_link_btn.addEventListener (MouseEvent.CLICK, onClick_openJTV);

"HowTo_jtv4u_link_btn" is the button in question. It worked fine until I changed the State noted in a MC.

What is the appropriate steps to change a button in this way?

Obviously, something you do by adding a movieclip is breaking the button somehow... but what something is is not clear.  What you could try to do... instead of using a SimpleButton control, create the button as a movieclip.

Looking at the code you showed above, you seem to try to tell the button go to frames specific... you don't do that when you use a symbol of SimpleButton... they do so on their own without the need of any coding on your part.  The code you showed would be easier to apply to a movieclip used as a button.  Maybe it is involved with the error you get... try to treat the button as a movieclip.

Tags: Adobe Animate

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