M12 editor: Age vs. Birthdate, then attribute limit

[gnlmppvs]

For the M12 editor, i have a couple questions


1) If I just want to make some guy about to retire 21 years old so i can play a full career with him on my team, can i just update the age field, or do i also have to update the birthdate field?


2) Taking the default roster and looking at some of the legendary hidden players in there, i see a couple 100 attributes, which i thought M12 only went as high as 99. Anyone tested the highest you can go with attributes like speed and all that, to where it actually creates a difference and doesn't make the game freeze? it'd be humorous to see kickers with 200 speed and hit power blowing up returners LOL



Just wondering if anyone knows the answers before I blow up some franchise files