Netsuitescript 2.x how to load custome record in map/reduce

There are two custom record c1 and c2 me need to be f开发者_运维问答etch data from c2 based on record c1 item and subsidiaries internal id, after that if get the response the update record c1.

i have tried the search.create for this but its not working ( to load the all record in c1 )