Question

I’m trying to access some variables from my parent in my child MC.

Parent code:

var data_history:String;    
function finish_checkUp(event:Event):void{          
        var checkUp_stat:String;
        checkUp_stat = data.check_UP_STAT;
        if (checkUp_stat == "PASSED"){
            data_history = "FALSE";
            gotoAndPlay ("domain_check");
        }
        else if (checkUp_stat == "FAILED"){
            data_history = "TRUE";
            gotoAndPlay ("error_data_conflict");
        }
        else if (checkUp_stat == "FAILED_UN"){
            data_history = "TRUE";
            gotoAndPlay ("");
        }   
}

CHILD MC:

 contt_btn.addEventListener(MouseEvent.MOUSE_DOWN, mouseClick);
    contt_btn.addEventListener(MouseEvent.ROLL_OVER,contt_btnOver);
    contt_btn.addEventListener(MouseEvent.ROLL_OUT,contt_btnOut);
    function contt_btnOver(event:MouseEvent):void{
        contt_btn.gotoAndPlay("over");
    }
    function contt_btnOut(event:MouseEvent):void{
        contt_btn.gotoAndPlay("out");
    }
    function mouseClick(event:MouseEvent):void
    {
        trace (MovieClip(this.parent).data_history);
        if (data_history == "TRUE"){
    MovieClip(parent).gotoAndPlay("begin_erasing");
        }
        else if (data_history == "FALSE"){
            gotoAndPlay("");}
    }

Now as you can see, i have tried the trace method, but with no luck. Flash doesn’t report any errors regarding the trace method, but does report the two undefined vars (data_history). Ive tried to use the trace method above all the functions, at the top of the script, still the same errors though.

any ideas?

Answer 1

In the trace, you are referencing the data_history property through this.parent. Assuming that traces your value, you need to adjust your if…else to reference the property through parent as well:

function mouseClick(event:MouseEvent):void
{
    trace (MovieClip(this.parent).data_history);
    if (MovieClip(this.parent).data_history == "TRUE"){
MovieClip(parent).gotoAndPlay("begin_erasing");
    }
    else if (MovieClip(this.parent).data_history == "FALSE"){
        gotoAndPlay("");}
}

If the trace you have in there throws an error, then the property never existed on parent.