>Yes, it is possible.
>
>DECLARE INTEGER vbHvsCodeTeze IN HvsCodeDll
> STRING @vHvsCode, STRING @vHvsAdr
>
>Instances of HvsCode and HvsAdr should be presented as strings. HvsAdr handling is a bit tricky, but still can be done.

Yupp - pretty certain String to hold 4 adress pointers into RAM to point to separately allocated and locked memory needing to be unlocked afterwards to prevent leaking. Still not good to have to guess the second parameter, as also a pointer to such a struct is mentioned as well...