Extern, how to import a function and rename it ?

BlitzMax Forums/BlitzMax Programming/Extern, how to import a function and rename it ?

skn3[ac]
 #1
module blah.blah
Extern "win32"
	Function RegisterClassLALALALALALAL(lpWndClass:Byte Ptr) = "RegisterClassExA"
end extern


Win I try and build this module I will get the following error:
Compile Error:Identifier 'RegisterClassExA' not found