[EnergyPlus_Support] can't find "PV Cell Temperature" in output variable

[<hope.zh@xxxxxxxxx>]

Dear list, I setup a PV　generator in E+ (V7.2), I can find the following output variables:
PV Generator DC Power
PV Generator DC Energy
PV Array Efficiency

However I can't find the following in the output variable list as introduced in E+ menu:
PV Cell Temperature
PV Array Short Circuit Current
PV Array Open Circuit Voltage

May i ask why these variables are not shown? 

BTW, I set the PV generator in the following process:
PhotovoltaicPerformance:Simple --> Gnerator:Photovoltaic --> EletricLoadCentre:Generators --> ElectricLoadCentre:Distribution

Thanks!

__._,_.___

Primary EnergyPlus support is found at:
http://energyplus.helpserve.com or send a message to energyplus-support@xxxxxxxx

The primary EnergyPlus web site is found at:
http://www.energyplus.gov

The group web site is:
http://groups.yahoo.com/group/EnergyPlus_Support/

Attachments are currently allowed but be mindful that not everyone has a high speed connection.  Limit attachments to small files.

EnergyPlus Documentation is searchable.  Open EPlusMainMenu.pdf under the Documentation link and press the "search" button.

Your email settings: Individual Email|Traditional
Change settings via the Web (Yahoo! ID required)
Change settings via email: Switch delivery to Daily Digest | Switch to Fully Featured
Visit Your Group | Yahoo! Groups Terms of Use | Unsubscribe

__,_._,___