> For the complete documentation index, see [llms.txt](https://docs.oserosuite.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.oserosuite.com/technical-notes/unreal-engine-notes/blueprints/add-function-to-promotable-operator-nodes.md).
# Add Function to Promotable Operator Nodes
To add a function to these operator nodes, a function must have these things:
1. The function must be `static`.
2. The UFUNCTION must be `BlueprintPure`.
3. The UFUNCTION meta must contain `CompactNodeTitle = "{Node Title}"`.
```cpp
meta = (CompactNodeTitle = "==")
meta = (CompactNodeTitle = "!=")
```
4. The function name must start with one of the defined “OperatorNames” in `BlueprintTypePromotion.cpp`.
```cpp
namespace OperatorNames
{
static const FName NoOp = TEXT("NO_OP");
static const FName Add = TEXT("Add");
static const FName Multiply = TEXT("Multiply");
static const FName Subtract = TEXT("Subtract");
static const FName Divide = TEXT("Divide");
static const FName Greater = TEXT("Greater");
static const FName GreaterEq = TEXT("GreaterEqual");
static const FName Less = TEXT("Less");
static const FName LessEq = TEXT("LessEqual");
static const FName NotEq = TEXT("NotEqual");
static const FName Equal = TEXT("EqualEqual");
}
```
### Example
From “OS\_RRS\_RenderDataLibrary.h”:
```cpp
UFUNCTION(BlueprintPure, Category = "Osero Suite: Render Results Screen", meta = (DisplayName = "Equal (Render Job)", CompactNodeTitle = "==", Keywords = "== equal"))
static bool EqualEqual_JobJob(FOS_RRS_JobData A, FOS_RRS_JobData B);
UFUNCTION(BlueprintPure, Category = "Osero Suite: Render Results Screen", meta = (DisplayName = "Not Equal (Render Job)", CompactNodeTitle = "!=", Keywords = "!= not equal"))
static bool NotEqual_JobJob(FOS_RRS_JobData A, FOS_RRS_JobData B);
```
More examples can be found in "KismetMathLibrary.h".
