unloading of resources

Unity Engine
1

I’ve noticed that there is a few treads on this but somehow those doesn’t help in answering what i needed. I only wanted to unload a single image. For example, i loaded this image levelImg[selectedLevel] = Resources.Load(“abc”, Texture2D);
and i wanted to unload it later to save memory. How can I do it?

2

levelImg[selectedLevel] = null;

–Eric

3

i tried that but somehow the image is not unloaded…