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Pinned topic Validating user input ?

‏2008-09-25T16:17:23Z |
Could anyone point me to examples of validating user input when using the WebClient ? Something that would take text data entered in response to a program activity jsp, pass it to a processing jsp which would then validate it. If the data is then determined to be invalid, repost the original program activity jsp with the appropriate error message displayed, keeping or resetting the work item state to the original state ?

I see how to do it if I were writing my own client but at present, I'd like to stay with IBM's WebClient

Seems like this should be a pretty standard function but I haven't found much in the Workflow docs or samples that sheds much light on the subject