Thats the problem, if your combobox datasource is a table then you need a third column in you table/cursor that gives you the description without the indenting character. The easiest way to get that third column is to create a cursor from you table with SQL:

select lo_desc, lo_code, alltrim(lo_desc) as lo_temp ;
from mytable ;
into cursor NewCursor

The code above is a bare minimum example.