question is..can I use PARM1-REC in occurs clause??
Did you check the manual (link at the top of the page)? The COBOL Language Reference clearly states that OCCURS integer-1 TO integer-2 TIMES is the syntax. I'm sure if you search enough you will discover that COBOL means integer numbers only when it says integer-2 -- NOT VARIABLES. Per the manual, I believe the answer to your question is no, you cannot use PARM1-REC in the OCCURS clause.