Delete initial value

Hello guys, I need help with the initial value that I send from another window, it turns out that after using that value, even if I restart the screen, that value still exists there.

Is there a way to erase what it says in the “get start value” variable?

Guys I tried to do this, but since I keep it in a global variable it always fills me with the initial value, if or if I have to delete the initial value, how could I do it?