problem loading data

i have a problem . i am uploading a data into one of the custom cube . i am using extractors 2lis_03_bf,2lis_02_scl,2lis_13_vditm , when i upload the data . i can fill all the data in the different feilds . but when i see for some custom defined charcters . no data avalible in cube but they r avalible in sid tables. now how can i pull the data from sid or charcters into cube . thanks in adavance . thank u