How Can I perform the external abap programe transmit the internal table in

Hi,all

In Sapscript,I want calculate a internal table and return the changed table to Sapscript

I know used the transmit result variable for example:

/:PERFORM GET_MAKTX IN PROGRAM ZXX

/:USING &MATNR&

/:CHANGING &MAKTX&

/:ENDPERFORM.

How can I set Using with a table?

Thanks

Sun