messnamed different than Global.sendnamed

Hi,

Is there any reason of the difference between the messnamed method
and the method sendnamed of the Global object? Actually, it seems the
length of an Array send with messnamed is limited to 255 items. With
sendnamed, the last time I checked it was 4094 (which seems coherent).
Anyway, it would be nice to increase the messnamed limitation, it's a
lot more simple to use than creating a global object and the others
things.

Best,
ej