when you try to compare the value add double quotes.
$click.value$ as "$click.value$"
so,
case("$click.value$" == "Overview Page",0, "$click.value$" == "Rules Page",1, "$click.value$" == "History Page",2, "$click.value$" == "Settings Page",3, "$click.value$" == "Camera Page",4, "$click.value$" == "Paring (Manage Devices) Page",5, "$click.value$" == "Third-Party Card Page",6, "$click.value$" == "Cloud Page",7, "$click.value$" == "Custom Page",8, 1=1)
would help
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