use of FM: REUSE_ALV_FIELDCATALOG_MERGE

hi all,

i am using the FM REUSE_ALV_FIELDCATALOG_MERGE.

in the parameters when i pass structure name then it works fine.

but when i am using internal table and want to pass to the FM then it gives me the dump.so how can i use internal table.........

thanks in advance

regards

nilesh