get CIW options from skill code

[sc]

Hi,
I need to get settings from CIW->Options->Checkout Preferences...
within Skill code.
I found that I cat run ddsCheckoutPreferences() dialog to let user
make settings.
Then I cat get the next variables:
ddsCheckoutPrefForm->fieldList->prefAskFiles
ddsCheckoutPrefForm->fieldList->prefAutoFiles
ddsCheckoutPrefForm->fieldList->prefAskCVs
ddsCheckoutPrefForm->fieldList->prefAutoCVs
But CIW outputs CDS_AUTO_CKOUT set to none (view, files, all)
How cat I map these four variables to none, view, files and all?
Thanks.
Any hint is very appreciated.