Hi Andrus,

check out my Struct class here in the library for an example about how to pass an array to an API function. Basically, you need:

DEFINE CLASS FilesArray AS STRUCT
   DIMENSION aFiles[1]
   cMembers = "pz:aFiles"
ENDDEFINE

declare long ZpArchive in zip32.dll ;
long argc, string funame , string Zipnames 

oFiles = CREATEOBJECT("FilesArray")
Dimension oFiles.aFiles[2]
oFiles.Requery()
oFiles.aFiles[1] = "Test1.Exe"
oFiles.aFiles[2] = "Test2.Txt"
? ZpArchive( 2, 'test.zip', oFiles.GetString() )

Christof