Hello Ervin,
Thanks for reaching out!
Unfortunately, there is no way to modify the behavior of screen recording slides, since these slides are automatically created by Storyline 360 using the inputs that were being detected by the application during the actual recording. Since the string '20210901' wasn't included in the original recording, there is no way to included this in the original slide interaction.
As an alternative, you can just create your own custom slide that takes both '2021-09-01' and '20210901', and insert it in the correct position in your scene.
