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Overview

The set_property tool allows you to modify any property of a Roblox instance in Studio. This is the fundamental tool for changing instance properties like Position, Color, Transparency, Size, and more.

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Parameters

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instancePath
string
required
Path to the instance using dot notation (e.g., game.Workspace.Part)
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propertyName
string
required
Name of the property to set (e.g., Position, BrickColor, Transparency)
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propertyValue
any
required
Value to set the property to. Type must match the property’s expected type.

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Vector3 Handling

When setting Vector3 properties (Position, Size, Velocity, etc.), use the object format: 
{"X": 10, "Y": 5, "Z": -20}
Do NOT use string format like "10, 5, -20" - this will cause errors.

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Data Type Warning

Property values must match the expected data type:
  • Numbers: Use plain numbers (e.g., 5, 0.5, -10)
  • Booleans: Use true or false (not strings)
  • Strings: Use quoted strings (e.g., "Red", "MyPart")
  • Vector3: Use object format {"X": n, "Y": n, "Z": n}
  • Color3: Use object format {"R": 0-1, "G": 0-1, "B": 0-1}
  • BrickColor: Use string with BrickColor name (e.g., "Bright red")

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Examples

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Setting a simple property

{
  "instancePath": "game.Workspace.Part",
  "propertyName": "Transparency",
  "propertyValue": 0.5
}

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Setting a Vector3 position

{
  "instancePath": "game.Workspace.SpawnLocation",
  "propertyName": "Position",
  "propertyValue": {"X": 0, "Y": 5, "Z": -80}
}

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Setting a Color3 property

{
  "instancePath": "game.Workspace.Part",
  "propertyName": "Color",
  "propertyValue": {"R": 1, "G": 0, "B": 0}
}

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Setting a BrickColor

{
  "instancePath": "game.Workspace.Part",
  "propertyName": "BrickColor",
  "propertyValue": "Bright blue"
}

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Setting a boolean property

{
  "instancePath": "game.Workspace.Part",
  "propertyName": "Anchored",
  "propertyValue": true
}

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Use Cases

  • Adjusting positions and sizes of parts
  • Changing visual properties (color, transparency, material)
  • Modifying physics properties (anchored, mass, friction)
  • Setting GUI properties (text, size, position)
  • Updating script properties

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