CREATE TABLE table_50990 ("Game" FLOAT, "Date" TEXT, "Team" TEXT, "Score" TEXT, "High points" TEXT, "High rebounds" TEXT, "Location Attendance" TEXT, "Record" TEXT)

What is the highest rebounds that has conseco fieldhouse 11,964 as the location attendance?
SELECT "High rebounds" FROM table_50990 WHERE "Location Attendance" = 'conseco fieldhouse 11,964'
SELECT "High rebounds" FROM "table_50990" WHERE "Location Attendance" = 'conseco fieldhouse 11,964'