How to use ClimateZone Class

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I am writing as I am confused about the ClimateZone Class in the OpenStudio api

When I add a Climate Zone object via Desktop OS to OSM with no climate zone object, the following is added to the model.

OS:ClimateZones,   
{411f8af8-6ffc-4657-8b86-090ed54ce2b2}, !- Handle                        
!- Active Institution   ,              
!- Active Year   ,                     
!- Climate Zone Institution Name 1   , 
!- Climate Zone Document Name 1   ,    
!- Climate Zone Document Year 1   
3B,  !- Climate Zone Value 1   
CEC ,!- Climate Zone Institution Name 2   
California Climate Zone Descriptions ,!- Climate Zone Document Name 2   
1995 ,!- Climate Zone Document Year 2 
!- Climate Zone Value 2 ;

However when I use the ClimateZone class in Ruby to add my own ClimateZone object (here) using the setTypeAndValue function the function insists that I give it a int value for Climate Zone Document Year.

I am using the data seen below for my other arguements to the setTypeAndValue function where the climate zone value could be any ashrae climate zone value.

What value should I be using for Climate Zone Document Year?

OS:ClimateZones,
{411f8af8-6ffc-4657-8b86-090ed54ce2b2}, !- Handle
,                                       !- Active Institution
,                                       !- Active Year
ASHRAE,                                 !- Climate Zone Institution Name 1
ASHRAE climate zone description,        !- Climate Zone Document Name 1
,                                       !- Climate Zone Document Year 1
3B;                                     !- Climate Zone Value 1