Data Monitor

Hi everyone,
I have to create a project in which a mechanical arm moves at the user’s command (by pressing buttons 1, 2 and 3) and when these buttons are clicked I would like the informations on the monitor at the bottom right to be updated. For example I take the extention value of the arm. This information must be variable: if at the beginning the arm is extended by 0% and at the end of animation 1 the arm is extended by 70% I would like that during the animation the data passes form 0 to 1 to 2 to 3 and so on up to 70%, I don’t want informations go directly from 0 to 70. The monitor must be fixed at bottom right so if I turn the interface motitor must remain where it is. To make it happen I thought I would record an animation of the values ​​changing by one second per frame (0 to 100% in 100 frames). put this video in a square at the bottom right and if the arm moves from 0 to 70% play the video from frame 0 to frame 70, if the arm moves from 45 to 60% play the video from frame 45 to 60. Do you think it may work? I attach a photo for better understanding. (the photo does not represent my real work as I cannot disclose it for privacy. Thank you very much.