---
title: "Tag Properties"
url: "https://help.maxon.net/c4d/en-us/Content/html/TMETABALL-ID_TAGPROPERTIES.html"
section_path: "Object Manager > Tags Menu > Modeling Tags > Metaball Tag > Tag Properties"
element_id: "TMETABALL"
group_id: "ID_TAGPROPERTIES"
description: "Defines the size of the meta-hull. A value of 100% means that the meta-hull is as large as the original object; at 50%, it is half the size of the …"
---

## Tag Properties

### Negative Influence

Parameter ID: `METABALLTAG_NEGATIVE`

The object will repel the hull rather than attract it.

### Strength

Parameter ID: `METABALLTAG_STRENGTH` · Range: [0..10000%]

Defines the size of the meta-hull. A value of 100% means that the meta-hull is as large as the original object; at 50%, it is half the size of the original object; at 200%, the meta-hull is double the size of the original object.

### Radius

Parameter ID: `METABALLTAG_RADIUS` · Range: [0..+∞m]

When Metaballs are created, a shell will be placed around the elements. The radii or the distance from other elements to this shell can be defined using this setting.

### Type

Parameter ID: `METABALLTAG_TYPE`

![Image: 039582.jpg](https://help.maxon.net/c4d/en-us/Content/Resources/Images/039582.jpg)\
From left to right: **Type** = Sphere, Line, Triangle. At bottom left, both polygon objects and the splline in the Metaball object.

Metaballs surround elements (e.g., object vertices, splines, polygon edges, triangles) with a shell and consolidates them into a meta shell. These settings let you define how this should take place. The following types are available:

- **Sphere**: A sphere will be placed around each object point (with the exception of splines, around which a tube will be placed). A liquid-like structure will result, which barely resembles the original polygon object. The next two options behave very differently.
- **Line**: A cylindrical shell with the **Radius** value described above will be placed around the edge of each polygonal object, regardless of whether it's an actual polygon or a generator. Smaller **Radius** values will produce wireframe-like structures.
- **Triangle**: A shell will be placed around each polygonal object's triangles with the **Radius** value described above. This lets you create Metaball objects that very closely resemble the original polygon object.

Please note the following:

- **Type** is irrelevant for splines
- Line and Triangle **Type**s create surfaces on the inside of Metaballs. A shell is placed around the original surface, i.e., a surface lies over and also under the original surface (in the case of a sphere, the Metaball will consist of an inner and an outer shell).

### Solid

Parameter ID: `METABALLTAG_SOLID`

In order for this function to work, **Type** must be set to Triangle and the object to which it is assigned cannot be a spline. The interior of the object will be seen as a solid and a Boolean effect can be evocated:

![Image: 040299.jpg](https://help.maxon.net/c4d/en-us/Content/Resources/Images/040299.jpg)\
**Negative Influence** enabled for the 2nd cube: at left the **Solid** option disabled, at right enabled (for both objects)

In the image above you can see how the **Negative Influence** option only affects the cube surface and the **Solid** option affects the entire volume.