Refrencing objects that are not present on frame 1 of the movieclip

Hello world!

I work with a movieclip right now that has two frames in it.  I want the user to be able to go back and forth between pages by clicking on the tabs on each page.  They click on the button is present on the frame that it applies (so, the button to switch to the frame 2 is present on frame 1 and vice versa).

I want to control when they are able to click back and be able to turn the buttons on and off whenever I need to, but given that the button to return to frame 1 is only on frame 2, when I reference the button fits as a null object from the main timeline.  How can I refrence an object that is not present on the first frame of a clip?

Here's the gist of what I have.  The main timeline has an object called "mAccess" which has 2 frames, windows and on reports.  Upstairs, there are two tabs, one for Windows, one for reports.  The Windows tab is not clickable when on the frame (frame 2) reports and the reports tab is not clickable when on the chassis of windows (part 1)

Main timeline:

mAccess.bReports.addEventListener (MouseEvent.CLICK, gotoreportstab);

function gotoreportstab(event:MouseEvent) {}

mAccess.gotoAndStop (2);

}

mAccess.bWindows.addEventListener (MouseEvent.CLICK, gotowindowstab);           <-it gives me the error on the null object reference

function gotowindowstab(event:MouseEvent) {since Windows does not exist on frame 1 of the mAccess.

mAccess.gotoAndStop (1);

}

Thanks for you help with anything that can give me!

the background is that you can not refer to an object that does not exist (yet).  the best workaround is to ensure that your object exists on the frames where you reference it.  the object does not need to be visible so it's not much extra work.  You can add and remove the object from the displaylist, as you see fit or activate and deactivate its visible property.

Tags: Adobe Animate

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