Goal Creation

Garmin Connect question:  I always loved proverb by Lao Tzu, "The journey of a thousand miles begins with a single step". So I was trying to create a goal for next year,  Walk 1,000 miles in a year.   Unfortunately,  it doesn't appear possible. The option is there in goals, "custom" - "casual walking", "1,000 miles", "1 year"  

But when I create the goal, no matter how far I walk,  miles are accepted in the goal. Remains at 0.  Is there a way to change this? Something I'm doing wrong?