How do I make a combo system?

[granite ermine]

Im making a game mostly based on platforming and combat but I want to add a combo system similar to the video posted below, basically for anything that the player punches it goes to its combo meter like in the video shown.

This is not my game btw

[flat orbit]

I’m probably useless rn but is the game open source or remix on?

[granite ermine]

Nah its not done yet

I need like someone to show me a script on how it works

[wild tartan]

You could create two number variables for example i named them combo and timer

So when the enemy is killed(or damaged) the combo increases and the timer is set to the maximum in my case is 4 seconds also it does a broadcast to the map that makes the timer start and when it ends the combo is set to 0

[granite ermine]

Thank you