Hello, good night!

I'm facing some problems in Zoho Sheet, while trying to format automatically dates in my sheet.
Here in Brazil we use the format dd/mm/yyyy...that's what I chose as custom format for my sheet. But if I insert January 2nd, for instance, typing 02/01/2015, Zoho atumatically changes it to 01/02/2015...and thats February 1st.

I don't know why these changes occur. I've typed 24/12/2014, for instance, and it doesn't change to 12/24/2014.

Can u help me please??!