Hello @meleseenyew1919 ,
No need to apologize obviously. 😉
Concerning PROC NLMIXED: I have never used PROC NLMIXED before and have no time to look into it this week.
I suggest you start a new topic (a new question) in this same board (Home > Analytics > Statistical Procedures).
That way it becomes a fresh / new topic that will be looked at by almost "everyone" following the board, which maximizes your chances for success. As told before, this topic is no more looked at because it seems solved for the others.
Good luck,
Koen
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