Piechart Trellis Layout

I have a regular pie chart which displays a breakdown of all Operating Systems but after trying to use the Trellis drill down it does not work (Screenshot below) Please see my dashboard source code.

OTL Client Desktops Test

Client Code*machine="**"*companyCodecompanyCodeindex=ad source=otl_adouscan description=* description!="" | regex description="^[A-Za-z0-9]{2,4}$" | dedup name, description | eval companyCode=upper(description) | eval companyName =lower(name) | dedup companyCode | table companyCode | sort companyCode-24h@hnowAllModelAllModel=""ModelModel`GEN_ProductionWorkstations` | rename User_Name0 as LastKnownUser, Caption0 as operatingSystem, Version0 as Version, Model0 as Model | eval machine=lower(Name0) | search $companyCode$ | dedup Model | table Model | sort Model-24h@hnow**Operating SystemAll*operatingSystem=""operatingSystemoperatingSystemindex=sccm sourcetype="otl_dbin_machineinfo" host=opspkhf03p source=dbmon-dump://otl_db_opsccmsql_sccm/otl_dbin_machineinfo | rename User_Name0 as LastKnownUser, Caption0 as operatingSystem, Version0 as Version, Model0 as Model | eval machine=lower(Name0) | search $companyCode$ , $model$ | dedup operatingSystem | table operatingSystem | sort operatingSystem-24h@hnow*Time Range-15mnow

`GEN_ProductionWorkstations` | rename User_Name0 as LastKnownUser, Caption0 as operatingSystem, Version0 as Version, Model0 as Model | search $companyCode$ | dedup machine | stats count by operatingSystem$Test_Time_Range.earliest$$Test_Time_Range.latest$collapsedcollapsedcollapsedpie0.01allnone394progressbar1mediumoperatingSystem

[1]: /storage/temp/226759-splunk-sc.png ![alt text][1]