Stored Procedure Paremeter issues

I have issue with @serviceIdInserts while executing Below sp. exec('declare @points Point_ID_TBLTYPE, @ServiceIdList Service_ID_TBLTYPE ' + @serviceIdInserts +

        'EXEC US_M_REP

        @COM_ID=''' + @COM_ID + ''',

        @CUST_ID=''' + @CUST_ID + ''',

        @UOM_ID=''' + @UOM_ID + ''',

        @ST_DATE=''' + @ST_DATE + ''',

        @END_DATE=''' + @END_DATE + ''',

        @INCLUDE_SUB_METERS=''' + @INCLUDE_SUB_METERS + ''',

        @TIME_GRANULARITY_MINUTES=''' + @TIME_GRANULARITY_MINUTES + ''',

        @POINT_ID_LIST=@points,

        @service_ID_LIST=@serviceIdList')