Repeat or loop groups every x time

Hi all

I can't find how to to this :

I want to make a level that have a gravity field activated for 5 seconds then deactivated for 5 seconds and repeat this all the level.

plyer will go up when gravity not working for x time then will go down when gravity activated, and loop this all the level

Can i make it with groups, or any other way.

I have see example Loop event 100 times, Is there Loop every 5 seconds or so?

Thanks for help.

Have a nice day.

Create a global variable GRAVITY

every 5 seconds set GRAVITY : 1-GRAVITY

if gravity is 0 - turn of gravity

trigger once

if gravity is 1 - turn on gravity

trigger once

Thank's alot LittleStain

My 3 day's problem gone forever.