> Hi all,
>
>
>
> I’m running out of time on this project I am working on and so I am  
> hoping someone can help me again:
>
>
>
> I’m trying to set an instance’s value to be the position of the choi
> ce node where special = true in my main instance.
>
>
>
> The xpath expression to find that particular node is
>
>
>
> instance(‘my-instance’)/setup[os=’windows’]/choices/choice
> [special=’true’].  Only one node per OS will have special=’true’.
>
>
>
> Can someone please tell me the correct syntax to get the position of  
> that node?  I’ve tried many combinations but none seem to work.
>
> Doing “string(count(../preceding-sibling::choice[special=’true’])
> +1)” doesn’t seem to work as there are multiple OSes in this setup a
> nd I need the one that is for windows specifically (in this case).
>
>
>
> Thanks!
>
> Stephanie
>
>
>
>
>
>
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