如果我没猜错的话。。。你的脚本应该是 
i = $game_variables[419] 
c = $game_variables[420] + 15
$weaponex = c 
然后。。 
n = $game_party.actors[0].name 
l = $game_variables[420] + 15
cc = $game_party.actors[0] 
w = $data_weapons[$game_variables[419]].name 
Mess_Text.write("#{n}强化[+#{l} #{w}]成功") 
对不对呀~~