Here's mine if the tutorial one doesn't work for you.
100DD2E8 EB 38 JMP SHORT Standard.100DD322
100DD2EA 8B7C24 0C MOV EDI,DWORD PTR SS:[ESP+C]
100DD2EE 0FB7C7 MOVZX EAX,DI
100DD2F1 2D 09520000 SUB EAX,5209
100DD2F6 EB 31 JMP SHORT Standard.100DD329
100DD2F8 83E8 05 SUB EAX,5
100DD2FB EB 2C JMP SHORT Standard.100DD329
100DD2FD 2D E8070000 SUB EAX,7E8
100DD302 75 1E JNZ SHORT Standard.100DD322
100DD304 6A 01 PUSH 1
100DD306 8BCE MOV ECX,ESI
100DD308 E8 D7D2FFFF CALL Standard.?GetCurrentSkill@ISkillMgr>
100DD30D 0FB7F8 MOVZX EDI,AX
100DD310 8B06 MOV EAX,DWORD PTR DS:[ESI]
100DD312 8BCE MOV ECX,ESI
100DD314 FF50 04 CALL DWORD PTR DS:[EAX+4]
100DD317 8BC8 MOV ECX,EAX
100DD319 E8 F547FEFF CALL Standard.?IsElf@ICharacter@core@@QB>
100DD31E 84C0 TEST AL,AL
100DD320 ^75 CC JNZ SHORT Standard.100DD2EE
100DD322 32C0 XOR AL,AL
100DD324 5F POP EDI
100DD325 5E POP ESI
100DD326 C2 0400 RETN 4
100DD329 B0 01 MOV AL,1
100DD32B ^EB F7 JMP SHORT Standard.100DD324
basically almost the same except I leave the JNZ ones alone