<Taking a wild guess>
Under the action "Text Message"
Set the milliseconds to a number that is reasonable for the amount of text in the Text Message.(2 lines of text could be 10,000 millieseconds???)
And then at the end of the trigger, Add a "Wait 10,000 millieseconds" or some other time that'll make sure the whole Text Message is seen before it starts the game or continues the brief.