i would like to make an on and off switch that when clicked changes a variable and when clicked another time changes it back.

You have the right idea. Use a variable to track the current state. Here is an example.

mstone326 wrote:

You have the right idea. Use a variable to track the current state. Here is an example.

how do i get the red blocks?

The red blocks are just for the forum. I put them where you would put what should happen when the light goes on and when the light goes off. Maybe you have a costume with the light on, and a costume with a light off. See if this project helps

https://scratch.mit.edu/projects/194036878/#editor

mstone326 wrote:

The red blocks are just for the forum. I put them where you would put what should happen when the light goes on and when the light goes off. Maybe you have a costume with the light on, and a costume with a light off. See if this project helps

https://scratch.mit.edu/projects/194036878/#editor

i tired the script but when i click the sprite it changes the variable but will not change it back

where you put the red blocks i set it to change a variable to 0 then 1 but when it changes to 1 it will not go back if i click it again

Did you look at the project I shared?

If not, look at that. Also, share the project you need help with and we can look and help you along.

thank you it worked, what went wrong is that i used the wrong variable in the script. well thank you

Welcome to Scratch. Best of luck on your project!

make a sprite for switch, and write this script:

OTSFan203 wrote:

make a sprite for switch, and write this script:

Both scripts will run when the sprite is clicked but even if you're controlling the order you'll have a problem. Imagine they run in the order shown and light=off. It'll gets switched to on in the first script and then off again in the second. If it's on it'll get switched off by the second.

Change the order ofthe scripts and you get the opposite problem - it will always end up on.

when green flag clicked

ScratchUser1008666 wrote:

when green flag clicked

That wouldn't really work… and this post in 2 years old.
You're a new user so you're OK, but please pay attention to when things have been published next time

This was helpful, thanks!

SMSK wrote:

This was helpful, thanks!

That's great! However, please don't post on old questions like this - it bumps them back to the top of the index, which is confusing for others.