When trying to bring your functions to 'life', I changed the proc_FilltblIndexUsageInfo

ALTER Proc [dbo].[proc_FilltblIndexUsageInfo]

AS

Begin

Truncate table tblIndexUsageInfo

insert into tblIndexUsageInfo

select db_name(db_id()) DbName,

so.name as 'TableName',

ISNULL(si.name,'No Index') as IndexName,

si.index_id,

Case When is_primary_key=1 then 'Primary Key Constraint'

Else 'Index' End ConstraintType,

si.type_desc,

dbo.Uf_GetIndexCol(si.index_id,so.object_id,0) As IndexKeyColumn,

dbo.Uf_GetIndexCol(si.index_id,so.object_id,1) As IncludedCols,

spi.user_seeks,spi.user_scans,spi.user_lookups,spi.user_updates,

(user_seeks+user_scans+user_lookups+user_updates) as 'IndexUsage ',

dbo.Uf_GetIndexSize(si.index_id,so.object_id) 'IndexSizeKB',

Cast(

(user_seeks+user_scans+user_lookups+user_updates)/

dbo.Uf_GetIndexSize(si.index_id,so.object_id) As decimal(10,2))

As IndexUsagetoSizeRatio

from sys.objects so inner join sys.indexes si

on so.object_id=si.Object_id

inner join sys.dm_db_index_usage_stats spi

on spi.Object_id=so.Object_id

and si.index_id=spi.index_id

and spi.database_id=db_id()

where so.type='u'

END