apply a 5x5 blurring filter to the image with imfilter. Attempt to deblur the result using inverse filtering with constrained division

%Im not getting any error message but also the figures are not showing up. I'm doing anyting wrong with this code?

im=imread('flower.tif');

impc=im2uint8(rgb2gray(im));

bts=impc(100:355,50:305);

imshow(bts)

ma=fspecial('motion',7,0);

bm=imfilter(bts,ma);

imshow(bm)

ma2=zeros(256,256);

ma2(1,1:7)=ma;

maf=fft2(ma2);

bmi=ifft2(fft2(bm)./maf);

fftshow(bmi,'abs')

d=0.02;

maf=fft2(ma2);maf(find(abs(maf)<d))=1;

bmi=ifft2(fft2(bm)./maf);

imshow(mat2gray(abs(bmi))*2)