Moving Averages

Hi
I could really do with a 200EMA, but the max I seem to be able to choose is only 100. Am I missing something? Or if this isn't possible, do you know of any way I might be able to mimic the 200?
Thanks very much for your help!
I could really do with a 200EMA, but the max I seem to be able to choose is only 100. Am I missing something? Or if this isn't possible, do you know of any way I might be able to mimic the 200?
Thanks very much for your help!