[RESOLVED] Crystal reports 2008 DLL development

Hello everyone,

does anyone knows how to develop dlls for crystal reports 2008?
My OS is Windows7 x64 but i would like to develop dlls for x64 and x86, i won't mind to compile them separately.

i did try this method but i had no luck, i can't find the functions in crystal reports formulas...

could someone point me in the right direction? Samples are appreciated too.

Just in case someone else needs the same sample i've used...