using Primefaces poll to open dialog

Question

I'm trying to use Primefaces' poll feature to open a dialog box every 30 seconds. I previously got the poll to call a growl and show some data, but for some reason even though the code to open the dialog has been called, the dialog box just doesn't open.

I know the backing bean function to open the dialog works because I tested it with a button instead of poll, so I'm not sure exactly what is happening here.

Here is where I am calling poll:

<p:poll interval="30" listener="#{eventBean.openNote}" />

And here is my code in the backing bean:

public void openNote() {
    RequestContext context = RequestContext.getCurrentInstance();
    context.openDialog("notedisplay");

}

Here is the code I used when testing it with a button:

<p:commandLink id="btnSearch" value="Event"
                                actionListener="#{eventBean.openNote}"
                                style="margin-right:10px">
                            </p:commandLink>