GLCM code result in Artificial Neural Network(ANN) is bad . Why can it be?

I have mammogram image. I am making segmentation for detecting tumor firstly and then I am using glcm codes for feature extraction process on that tumor. Codes are working but ANN result is so bad.

I tried also in matlab own ANN application , the result is bad also there. What can be wrong or is there any else code to give good result ?

GLCM function is added to attachment and working code is in here .

I=imread('iamge.jpg');
I=rgb2gray(I);
    GLCM2 = graycomatrix(I,'Offset',[2 0;0 2;-2 0;-2 2]); 
    stats1a = GLCM_Features4(GLCM2,0);
    stats1=struct2array(stats1a);