Multiselect dropdown for enumerated values - numbers

During verification of DROOLS-5011 was spotted corner case that was not fixed.

In the original issue customer user attached project with enumeration for String field and used that field in guided rule template.

The issue is if user follow the same scenario but instead of String field, some number type is used, for example Integer. In such case, when user added data to rule template, multiselect dropdown was shown correctly, however in the grid was always shown 0.