Using FETCH to Download DATA from FRED

Hi, MATLAB experts

I am trying to download a monthly data from FRED by using fetch function as follows (from Sep 2005 to now):

c = fred('https://research.stlouisfed.org/fred2/');

da = fetch(c,'BAMLH0A0HYM2','P','09/01/2005', [], 'M');

However, it downloads a daily data rather than a monthly one.

Can you please take a look at the code and let me know what is wrong with this??

Best Regards,

Jake