When an event starts, I ensure that the number I set with a float variable continues.
You mean it is not continuing already?
Or you want to continue from the last variable is set by timer between gameplay sessions? if so you need to save your game variables.
A detailed explanation of what you are trying to achieve (screenshots, code) would give you more specific feedback, as currently your question is too broad to answer.
You have a “text block” widget.
every “event tick” it updates text to a float value.
This float value becomes less each tick, by world delta seconds, until 0.
What is not working?
I made a event that when player presses Left Click 30 TIMES.I wanna stop timer when player Left Click 30 times.
Currently you have “event tick”
event tick, is 1 event for 1 frame (60 FPS (frames per second), is 60 events per second).
What you want is 1 event for 1 mouse click?