I think thats true.  You should be able to code 

do while i <= stem.0

to do what you want.  You will have to set initial value for i and increment it 
in your loop.

Dana

On Thu, 27 Feb 2020 21:14:49 +0000, Gibney, Dave <gib...@wsu.edu> wrote:
>
>It appears that the do start and stop are evaluated and fixed at the beginning 
>and subsequent alterations to the end value aren't effective.
>Is this just the way it is? Or is there a technique I don't know?
>
>Dave Gibney
>Information Technology Services
>Washington State University

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