Unable to change image in a material

[sophiadoan]

I was able to have it working in Python but when converting to C++ the variable 'texture' returned null.

Help please.

Ptr<Appearance> GetImageInDesign(std::string imageName) {
		//Check to see if the material exists in the local appearances.
		Ptr<Document> doc = app->activeDocument();
		if (!doc)
			return false;

		Ptr<Product> product = app->activeProduct();
		if (!product)
			return false;

		Ptr<Design> design = product;
		if (!design)
			return false;
		Ptr<AppearanceTextureProperty> image;
		Ptr<Appearance> mat = design->appearances()->itemByName(imageName);
		if (!mat) {//our document does not have this material
			//Get the existing appearance from fusion lib.
			Ptr<MaterialLibrary> matLib = app->materialLibraries()->itemByName("Fusion 360 Appearance Library");
			if (!matLib)
				return false;
			mat = matLib->appearances()->itemByName("Pine");
			if (!mat) {
				ui->messageBox("Unable to locate Pine!");
				return false;
			}
			mat = design->appearances()->addByCopy(mat, imageName);
		}
		image = (mat->appearanceProperties()->itemByName("Image")); //jpeg image used in the material
		if (!image)
			return false;
		
		std::string curName = image->name(); //this return "Image"

		Ptr<AppearanceTexture> texture = image->value();
		if (!texture)
			return false;
		if (!texture->changeTextureImage(ImageFolder + imageName))
			return false;
		//face->appearance = mat;
		//Copy it to the design, giving it a new name.
		return mat;
	}