Auto correct Spanish spelling in outlook 2010

Hello,
For some reasons, my Spanish auto correct is not working in outlook 2010. it works fine in Word.
I did add the Spanish language in the spelling.
I do have English and Spanish under the double line.
I did go into the Review tab, in the Language group, click the arrow under Language.
Click Set Proofing Language .
I did select the Detect language automatically check box.
But it doesn't work.
Any idea much appreciated.