Bonita BPM Community Edition Version : 7.3.3

List is not properly loading in bonita ui select widget

I am trying to show list values in select widget in bonita ui using process variable but its not working .I am using Bonita BPM Community Edition
Version : 7.3.3 Studio. Its showing values character by character not as string values.It should show values like:

some 1
some 2
but its displaying values like:
[
s
o
m
e

1
,
....
My whole process is given at link.
https://uploadfiles.io/4c1161

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