Hello, I read this post. I have a similar issue. Could you please review and let me know the proper syntax for this operation. DATA PASS_STR FAIL_STR; SET PREVDATA;                                  MATCH='Y';                                            ARRAY ASTR(*) _CHARACTER_;                            CW=COUNTW(ACTIVE_ING,';');                     DO C=1 TO CW BY 1 WHILE(MATCH='Y');                     ASTR=SCAN(ACTIVE_ING,C,';');    F=INDEX(STRENGTH,TRIM(ASTR(C)));                      IF F=0 THEN MATCH='N'; PUT C CW F MATCH ASTR(C) STRENGTH;                    END;                                                     IF MATCH='Y' THEN OUTPUT PASS_STR;                     IF MATCH='N' THEN OUTPUT FAIL_STR;                  The result I get is the following. As you can see as soon as the program starts reading the second array component it fails to find the ASTR(2). 1 4 15 Y   1.23      1.25MG;1.25MG;1.23MG;1.25MG        2 4 0 N    1.25       1.25MG;1.25MG;1.23MG;1.25MG         1 4 1 Y    1.875     1.875MG;1.875MG;1.875MG;1.875MG    2 4 0 N    1.875     1.875MG;1.875MG;1.875MG;1.875MG    1 4 1 Y     2.5        2.5MG;2.5MG;2.5MG;2.5MG              2 4 0 N     2.5        2.5MG;2.5MG;2.5MG;2.5MG           When I take the SCAN process outside of the above DO loop and run it in its own DO loop I am not able to populate beyond ASTR(2).  I get zero values for ASTR(3) and ASTR(4) values DO C=1 TO CW BY 1;                            ASTR(C)=SCAN(ACTIVE_STRENGTH,C,';'); END;                                          Can you please review the situation above and assist. ... View more