Ok, inspired by a video of Tesla (thanks) triggered on a text I thought it was the perfect solution to my problem. So you have to create a trigger box on the affected area, in my case the starting point of the character (he does not come back then I have no problem), then I created a “BP interface” and then I created a function called “Textgo” (bool ). In my “level BP” I created the trigger sequence of true and false (see HUD3.jpg) with the new “Textgo” by inserting it as “interface messages”. And finally in my “HUD BP” (HUD4.jpg) I connected “Event receive HUD draw” to a “Sequence”: 0 then enter and exit a “Gate” writing text “Gooo !!!”, then 1 back to write the text of the score etc … The “Gate” is opened and closed by a “Branch” which is connected with an event condition “Textgo” (Add event Textgo). My character spawn and immediately touches the trigger and displays the message “Gooo !!!” and at the same time the HUD with the score, with the difference that as soon as I move the word “Gooo !!!” disappears. For my case, that’s okay.
