Image wont tile vertically but does horizontally in Android
===

I'm trying to get a image to tile vertically in android, this is what I'm using: 


    	    BitmapDrawable tiledImage = new BitmapDrawable(myBitmap);
    	    tiledImage.setTileModeY(Shader.TileMode.REPEAT);
            tiledImage.setTileModeX(Shader.TileMode.REPEAT);
    	    ImageView Item = (ImageView)findViewById(R.id.ImageView01);
    	    Item.setBackgroundDrawable(tiledImage);

It works if I repeat it X and Y, but if I try to repeat it only Y (vertically) it fails to load the image, but if I load it only X (horizontally) it loads just fine! Anyone got any ideas?