How to control non-existent data items in SSRS chart at runtime?

Chart lines in SSRS report can be made visible or hidden with the help of Expressions on the range values. Following example show how this can be done in SSRS 2005. Steps 1 - 9 show how this is achieved in SSRS 2005 .

Step 10 shows how the same functionality has been made easier in SSRS 2008 R2 .

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