usage of RoomToSpace [BUG]

[RichardPinka]

Describe the bug
A clear and concise description of what the bug is.

I tryied to use fucnction RoomToSpace for the first time. But there is no manual for it. How to use ?
Do you have to copy rooms to your own model and create spaces before use this function ?
Or You have to create just spaces and function will suck data from rooms from linked model ?
Or does function do all above mentioned on its own ?

do I have to have selected Rooms before application of functions ? or do i have to have selected spaces ?
or do i have to have selected both - spaces + rooms before application function ?

ot of questions arise when the error window occurs and user sipmly is not sure if he did not use the proper way

To Reproduce
Steps to reproduce the behavior:

1. no matter the questions above, i tried to copy rooms from linked model to my model and ad afterwards i created the spaces (only on one level from more leveled model-building).
2. I clicked RoomToSpace function
3. error occured

Expected behavior
room data from rooms would be copied to spaces

Screenshots
error :
IronPython Traceback:
Traceback (most recent call last):
File "C:\Users\Richard_dell\AppData\Roaming\pyRevit\Extensions\PyRevitMEP.extension\pyRevitMEP.tab\Data.panel\RoomToSpace.pushbutton\script.py", line 154, in
File "C:\Users\Richard_dell\AppData\Roaming\pyRevit\Extensions\PyRevitMEP.extension\pyRevitMEP.tab\Data.panel\RoomToSpace.pushbutton\script.py", line 33, in init
TypeError: 'DocumentSet' object is not subscriptable

Script Executor Traceback:
IronPython.Runtime.Exceptions.TypeErrorException: 'DocumentSet' object is not subscriptable
at Microsoft.Scripting.Runtime.LightExceptions.ThrowException(LightException lightEx)
at Microsoft.Scripting.Runtime.LightExceptions.CheckAndThrow(Object value)
at Microsoft.Scripting.Interpreter.FuncCallInstruction2.Run(InterpretedFrame frame) at Microsoft.Scripting.Interpreter.Interpreter.HandleException(InterpretedFrame frame, Exception exception) at Microsoft.Scripting.Interpreter.Interpreter.Run(InterpretedFrame frame) at Microsoft.Scripting.Interpreter.LightLambda.Run3[T0,T1,T2,TRet](T0 arg0, T1 arg1, T2 arg2) at System.Dynamic.UpdateDelegates.UpdateAndExecute4[T0,T1,T2,T3,TRet](CallSite site, T0 arg0, T1 arg1, T2 arg2, T3 arg3) at IronPython.Runtime.Types.LateBoundInitBinder.FastInitSite1.CallTarget(CallSite site, CodeContext context, Object inst, T0 arg0)
at System.Dynamic.UpdateDelegates.UpdateAndExecute3[T0,T1,T2,TRet](CallSite site, T0 arg0, T1 arg1, T2 arg2)
at IronPython.Runtime.Types.PythonType.FastTypeSite1.CallTarget(CallSite site, CodeContext context, Object type, T0 arg0) at System.Dynamic.UpdateDelegates.UpdateAndExecute3[T0,T1,T2,TRet](CallSite site, T0 arg0, T1 arg1, T2 arg2) at Microsoft.Scripting.Interpreter.DynamicInstruction4.Run(InterpretedFrame frame)
at Microsoft.Scripting.Interpreter.Interpreter.Run(InterpretedFrame frame)
at Microsoft.Scripting.Interpreter.LightLambda.Run2[T0,T1,TRet](T0 arg0, T1 arg1)
at IronPython.Compiler.PythonScriptCode.RunWorker(CodeContext ctx)
at PyRevitLabs.PyRevit.Runtime.IronPythonEngine.Execute(ScriptRuntime& runtime)

Versions (please complete the following information):

• Revit: 2022.1
• pyRevit: [e.g. 4.7.4, pyRevit dropdown -> About and take a screenshot]

• pyRevitMEP [e.g. c98e12c, pyRevit dropdown -> Extensions -> Last commit column (this is the hash of the last commit)]
  92d9398

• rocket mode activated : Yes

• ironpython engine : 2.7.7

• cpython engine : 3.8.5

Additional context
Add any other context about the problem here.