Set Function Signature
Add or remove a parameter on a function graph. A signature change is a BREAKING change: adding gives every call site an unconnected pin that takes its literal default, and removing drops whatever was wired in. Neither is a compile error.
hf_set_function_signatureWriteArguments
| Name | Type | Description |
|---|---|---|
actionreq | string | add | remove |
blueprintreq | string | Blueprint ASSET path, no _C suffix. |
functionreq | string | Function graph name. |
parameterreq | string | Parameter name. |
accept_breakage | boolean = false | Required when call sites exist. |
direction | string = input | input | output |
force | boolean = false | Edit even when the asset cannot currently be saved - for example when revision control is configured but disconnected. The change will be made in memory and WILL BE LOST unless the underlying problem is fixed before saving. Only pass this if you intend to discard the work or fix the connection first. |
type | string | Required when adding. Same grammar as a variable type. |
Related tools
Nearby in Blueprints and graphs:
- Remove Blueprint Interface
- Remove Blueprint Variable
- Reparent Blueprint
- Set Blueprint Component
- Set Blueprint Defaults
- Set Blueprint Variable
- Set Pin Default
- Set Timeline Curve
All 40 tools in Blueprints and graphs — 31 more not listed here.