It's not possible... The expression shape is fairly limited with regards to
its native .NET understanding...  Best way to get around this is to embed
this in an external assembly.

Best regards,
Christof

--
Christof [Microsoft BizTalk Server MVP]


"MarkS" <markscott@newsgroups.nospam> wrote in message
news:246A4C25-8BEE-48BB-92F1-F191155EF3F8@microsoft.com...
> Is it possible to do something like this within an Expression shape:
>
> strCCN = srcFileName.Substring(0, srcFileName.IndexOf("_"));
>
> When I do this, the Expression shape doesn't understand what the heck
> Substring is. I'd rather not include a custom class project if I don't
have
> to... but I know that would work... just complicates deployment some.

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