You want to make a lua script?
If you just want to make it in a simulation:
!set life phot 0

@xetalim (View Post)

 or use the prop tool, go to life, and put 0

Console is better.

to get to the console, press the C in the top right corner or press this key:  ~

@tmo97 (View Post)

 Like when you put it down, it starts at 0?

Just use the console!

Jeez....

@tmo97 (View Post)

 You might want to ask people like feynman or mnnip, greymatter, and some others then....pm them.

I'll write you a script that you could run if you want...