# Don’t really understand this
**URL:** https://cl.desmos.com/t/don-t-really-understand-this/7608
**Category:** Questions
**Created:** [December 21, 2024, 2:44pm UTC](https://cl.desmos.com/t/don-t-really-understand-this/7608 "2024-12-21T14:44:56Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@Allen](https://cl.desmos.com/u/Allen)
#### Post date: [December 21, 2024, 2:44pm UTC](https://cl.desmos.com/t/don-t-really-understand-this/7608/1 "2024-12-21T14:44:56Z")
So I started ‘playing’ Desmos about a few days ago
And I am trying to recreate Geometry Dash (I’m a Scratcher)
And Kim trying to complete the collision thing
And I found out this code is not ok
Maybe you can’t compare lists with values?
(You don’ need to care about the other stuff.
I made sure they are right)
Since I’m a Scarcther, I just think a bit different.
yeah help me please
Edit: the graph:
https://www.desmos.com/calculator/ubnx47lswa?embed
(it’s not finished)
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### Author:  [@Guzman\_Tierno](https://cl.desmos.com/u/Guzman_Tierno)
#### Post date: [December 21, 2024, 4:07pm UTC](https://cl.desmos.com/t/don-t-really-understand-this/7608/2 "2024-12-21T16:07:25Z")
can you share the link to the desmos graph?
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### Author:  [@pirsquared](https://cl.desmos.com/u/pirsquared)
#### Post date: [December 21, 2024, 5:01pm UTC](https://cl.desmos.com/t/don-t-really-understand-this/7608/3 "2024-12-21T17:01:02Z")
> [@Allen](#):
>
> Maybe you can’t compare lists with values?
You can compare lists with values, but this in turn will create a new list (of trues and falses, essentially). You cannot trigger an action from a condition directly, but you _can_ set up a ticker that will monitor the condition and trigger an action. As Guzman says, if you share the graph, we can help further.
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### Author:  [@Allen](https://cl.desmos.com/u/Allen)
#### Post date: [December 24, 2024, 3:23am UTC](https://cl.desmos.com/t/don-t-really-understand-this/7608/4 "2024-12-24T03:23:01Z")
I shared the graph now, open the Test folder and you can see the collision code 🙂