How to change the title of a modal window?
mmmm if the above did not work 

&lt;a href="/some-thing" class="use-ajax" data-dialog-type="modal" data-dialog-options="{&amp;quot;width&amp;quot;:700, &amp;quot;title&amp;quot;:&amp;quot;YOURTITLE&amp;quot;}"&gt;LINK&lt;/a&gt;