zkreflex wrote: You're the best.  A few questions: 1) %sysevalF(not not %index(&f,.)) < what is this going to return? I understand the index function finds the character position of the . in each format argument, but the double not is confusing me.. Not not just make it a Boolean I should have use the Boolean option.  %let d=%sysevalF(%index(&f,.),boolean); 2) You use the structure "_&f" < what does this do? We need to have something the FIND when the format has only numbers and dot.  For example 10. would return 0 and we don't want that. 3) Is the %sysevalF function just an alternative to %eval? Sort of but it does floating point arithmetic and has options like INTEGER and BOOLEAN. Thanks for everything, enjoy the holiday! ... View more