error while using addtodate in bsxfun

Good day everyone. How to create months vector? I found one suggestion:

    x=bsxfun(@(Month,Year) datenum(Year,Month,1),(1:12).',1980:2010);

But would you tell, how can I use this trick,if needed months between 08.2004 and 03.2014? Of course I can use

   x=bsxfun(@(Month,Year) datenum(Year,Month,1),(1:12).',2004:2014);

and then cut excess months 01-07.2004 and 04-12.2014. But I I tried to do this:

   f = datenum('31.03.2014', 'dd.mm.yyyy');
   s = datenum('31.08.2004','dd.mm.yyyy');
   monthsQ = months(s, f);
   datesA = zeros(1, monthsQ+1);
   datesA(:) = s;
   monthsB = 0:monthsQ;
   dd = bsxfun(@(a,b) addtodate(a,b,'month'),datesA', monthsB); % But an error has accrued.

So why addtodate don’t work in bsxfun?

By the way, this code worked correctly:

    A = mat2cell(datesA', ones(monthsQ+1,1), 1);
    B = mat2cell(monthsB', ones(1, monthsQ+1), 1);
    dd = cellfun(@(a,b) addtodate(a,b,'month'), A, B);

Thanks for attention.