title: Referring to a variable one report region from another
body: <p>:APEX$ROW_SELECTOR is tabular report region one </p>
  
  <p>I want to select records from "Table" where :APEX$ROW_SELECTOR = 'X' as the source for the report in region 2 on the same page. The report returns no data </p>
  
  <p>select * from table where :APEX$ROW_SELECTOR = 'X'</p>