here I uploaded problem video

http://youtu.be/F2mwkXNCxfY

in a filtration doesn't take part "0" and "null" - datagrid-filter.js

for example:
if I set equally 15
I receive result with equally 15 and it is equal 0

if I set more than 15
I receive result from more than 15 and it is equal 0

how to correct it?

thanks!