Please help me on this Nested Do Loop issue !!

[Tom]

Looks like you want to loop over months and years.  So use SAS date functions.

%macro update();

%local i j vname;

%do i=1 %to 12;

  %do j=9 %to 13;

    %let vname=%sysfunc(mdy(&i,1,2000+&j),yymmn6.);

    %put i=&i j=&j vname=&vname;

  %end;

%end;

%mend;

%update;

[Astounding]

Or even:

%let vname = %eval(200000 + 100*&j + &i);

[damanaulakh88]

Thank You Guys My issue is solved now