Guys why always this 1 UNRESOLVED EXTERNAL ??

Check the first 2 images i uploaded, i just finished C++ and 2 ppl told me to learn ASM, and in ma first project this problem occured, searched on internet but didnt find anything helpful,
here i created 2 files, first one is a .cpp, and the other one is an .asm
and when debugging i get this problem although im writing the same code the guy did in a kinda video tutorial..
Help!
+ guys i found out that the guy in the video open Debug, Windows, he has lots of thing like Watch while i only has the first 2 options :/
Check image 3.
in his first video he told us to download SDK, i downloaded it and installed all it's components..
any one got any ideas??????

Please upload to an image storage and show the pictures using the [IMG] url [/img] brackets.
else wait until their approved -.-'

i think you have to create a header for this?

asm.h <--- define the function in there