You can't 'convert it to memcpy code' because that's an engine function. Well you probably can but that's not enough information.
Pretty sure no-fall damage is server sided anyway, like most HP calculations. However in theory you would find the addresses where the fall-height/damage values are stored, then just make them some other value.
*(DWORD*)0x10 = 5000; //0x10 being the address of fall-height, assuming it is a 4 byte value, make it = 5000.
@master131 what other information do you need to help me? Thank you
@Jason it is not server sided in cf
Well even if you gave me anymore information I probably couldn't help you. You're probably best off doing what Jason said.
The offset of the value in CShell.dll was posted in July in this thread.
Maybe you could try updating it using that. For all I know, the offset may still be the same...