OnInit: set .zenycost,1500; set .@cardcount,4; set .percardcost,1000; set .@i, 1000000; .@i -= (.zenycost+(.@cardcount * .percardcost)); debugmes "Hi:"+.@i; set .@i, 1000000; set .@i, .@i - (.zenycost+(.@cardcount * .percardcost)); debugmes "Hi:"+.@i; end; [Debug]: script debug : 0 110035719 : Hi:-2504 [Debug]: script debug : 0 110035719 : Hi:994500