> For the complete documentation index, see [llms.txt](https://docs.ladybug.tools/hb-radiance-primer/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ladybug.tools/hb-radiance-primer/components/1_modifiers/apply_modifierset.md).

# Apply ModifierSet

![](https://2572426507-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Ma9X8PomX22wWVDNCoj%2Fuploads%2Fgit-blob-80cf8550f496fd055e66bfe07eafea2545b604dd%2FApply_ModifierSet.png?alt=media)

![](https://2572426507-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Ma9X8PomX22wWVDNCoj%2Fuploads%2Fgit-blob-4f66ce2fd4d848aad6234f80e32d51f1327bd3a5%2FApply_ModifierSet.png?alt=media) - [\[source code\]](https://github.com/ladybug-tools/honeybee-grasshopper-radiance/blob/master/honeybee_grasshopper_radiance/src//HB%20Apply%20ModifierSet.py)

Apply ModifierSet to Honeybee Rooms.

### Inputs

* #### rooms \[Required]

Honeybee Rooms to which the input \_mod\_set should be assigned. This can also be a Honeybee Model for which all Rooms will be assigned the ModifierSet.

* #### mod\_set \[Required]

A Honeybee ModifierSet to be applied to the input \_room. This can also be text for a modifier set to be looked up in the modifier set library.

### Outputs

* #### rooms

The input Rooms with their modifier sets edited.