I would suggest that you modify the t-sql that you are using for the metric to resemble this. It should include the object name.

WITH CTE_1

AS (SELECT DB_NAME() AS dbName,

obj.name AS objectname,

ind.name AS indexname,

COUNT(*) AS cached_pages_count

FROM sys.dm_os_buffer_descriptors AS bd

INNER JOIN (SELECT object_id AS objectid,

OBJECT_NAME(object_id) AS name,

index_id,

allocation_unit_id

FROM sys.allocation_units AS au

INNER JOIN sys.partitions AS p

ON

au.container_id = p.hobt_id

AND (au.type = 1

OR au.type = 3)

UNION ALL

SELECT object_id AS objectid,

OBJECT_NAME(object_id) AS name,

index_id,

allocation_unit_id

FROM sys.allocation_units AS au

INNER JOIN sys.partitions AS p

ON

au.container_id = p.partition_id

AND au.type = 2

) AS obj

ON

bd.allocation_unit_id = obj.allocation_unit_id

LEFT OUTER JOIN sys.indexes ind

ON

obj.objectid = ind.object_id

AND obj.index_id = ind.index_id

WHERE bd.database_id = DB_ID()

AND bd.page_type IN ('data_page', 'index_page')

GROUP BY obj.name,

ind.name,

obj.index_id

)

SELECT TOP 1 *,

ObjPercent = CONVERT(NUMERIC(18, 2),

(CONVERT(NUMERIC(18, 2), cached_pages_count)

/ SUM(cached_pages_count) OVER ()) * 100)

FROM CTE_1

ORDER BY cached_pages_count DESC;