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In E+, in order for the humidity to be controlled you need several things:

1. A ZoneControl:Humidistat with humidity setpoint schedules.
2. For humidification you need a humidifier of some sort. OS has the Humidifier:Steam:Electric object which must be added to an AirLoop. To you use this object you'll also need to put a SetpointManager:Humidity:Minimum, a SetpointManager:MultiZone:HumidityMinimum, or a SetpointManager:MultiZone:MinimumHumidityAverage on the Outlet Node of the Humidifier:Steam:Electric. Check out the Input-Output Reference to understand which one fits your situation.

3. For dehumidification you need a system that can control humidity. Not all HVAC systems in E+ (or reality) control humidity explicitly. Here is a non-exhaustive list of some options:

   1. A ZoneHVAC:Dehumidifier:DX
   2. A Coil:Cooling:Water with the Controller:WaterCoil 'Control Variable Field' set to 'TemperatureAndHumidityRatio'
   3. An AirLoopHVAC:UnitarySyste with the 'Dehumidification Control Type' field set to 'CoolReheat' or 'Multimode'.