Data table Individual column filtering (select inputs) query

tsst2017

I have a data table like below

name	email	col3	col4
a	b	1,2,3	g
c	d	2	h
e	f	1, 3	i

I put Individual column filtering (select inputs) data table. The column 3 select box drop-down option show like

1,2,3
2
1,3

but i need to show like

1
2
3

how can i do it?