Remote Control HTTP array parameters wrong size in function calls? (UE 5.0.1)

Development Programming & Scripting
1

Hi All,

I’m calling functions on a C++ actor via the HTTP Remote Control API from an external application. Everything is working as expected except that parameters to a function that are arrays of floats come through as double the expected size, with zero’s for every second entry.

For example, I have my function declared as :

	UFUNCTION(BlueprintCallable, Category = "SC3D", meta = (ScriptName = "SetBallDetails"))
		void SetBallDetails(int arcNum, TArray<float> xPoly, TArray<float> yPoly, TArray<float> zPoly, float scale, float radius, float startTime, float endTime, FVector4 color);

and I’m passing the following JSON through the remote control API

{
	"objectPath": "/Game/Maps/SC3DLevel.SC3DLevel:PersistentLevel.BallArcController_1",
	"functionName": "SetBallDetails",
	"parameters":
	{
		"arcNum": 0,
		"xPoly": [-3.0535359382629396, 8.239432334899903, -8.463349342346192],
		"yPoly": [54.13432693481445, -138.52688598632813, 15.507794380187989],
		"zPoly": [5.2962236404418949, -2.4204938411712648, -8.552960395812989],
		"scale": 1.0,
		"radius": 1.0,
		"startTime": 0.0,
		"endTime": 0.39836424589157107,
		"color":
		{
			"X": 1.0,
			"Y": 0.5,
			"Z": 0.0,
			"W": 1.0
		}
	},
	"generateTransaction": false
}

Everthing arrives as expected with the exception of the xPoly, yPoly, zPoly arrays, they have 6 elements. eg : [0.0, 3.0535359382629396, 0.0, 8.239432334899903, 0.0, -8.463349342346192]

Bit stumped on this, I can’t seen anything odd in the JSON or the function declarations, and other functions I’m passing arrays of FString to are working fine.

Any ideas appreciated!

Thanks,