It looks like you could use JS to do your drilldown validation before sending the values to the next dashboard http://dev.splunk.com/view/SP-CAAAEME.
If we use an example from the above link, we could do something like this:
mytable=new TableView({
id: "example-table",
managerid: "subsearch2",
pageSize: 3,
wrap: true,
drilldown: "cell",
el: $("#mytable")
}).render();
// DO ALL VALIDATION HERE
// e.data is going to be the value that is selected by the user
mytable.on("click", function(e) {
// Bypass the default behavior
e.preventDefault();
// Displays a data object in the console
console.log("Clicked the table:", e.data);
// Implement validation logic here...
});
... View more