Use this routine when the main .csv file under test references field data in an external file. This technique is often used when the field-level data is complex or long, and is a way to circumvent the size limits placed on the .csv file under test.
call "MFUGETF using by reference get-filename by reference data-ptr by reference data-size end-call.
If the status-code returned is anything other than 0, then it failed to allocate enough memory for the file. When the test has finished, your test clean-up should include a call to CBL_FREE_MEM, to release the memory allocated to data-ptr.
call MFUGETF using by reference ws-filename by reference ws-pointer by reference ws-size end-call