Basic Example
I'll go through a quick walkthrough to get you familiar with the end-to-end flow of ModScripting.
Changing Memeorang Man's Gravity
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First, open the Level Builder, and open the level options panel:

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Enable experimental features:

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Exit the level options panel, then find and click on Memeorang Man. Then click the blue script button:

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Create a new ModScript, and you'll see something like this:

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Open the API Reference, and find the
gravityScalefield of thePlayer'sRigidbody2Dcomponent:
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Click the
Copy Examplebutton:
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Paste that example into the script editor, and add the line
memeorangManRigidbody2D.gravityScale = 0.069at the end to change the gravity:
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Now exit the ModScript panel, and enter play mode. You should see low gravity while jumping with Memeorang Man. Congratulations.