MessageGetNextRecipient is available since version 1.
Prototype:
number MessageGetNextRecipient(number nParam1, param2, string szParam1, param4, number T_STRING_NULL(1) // char*, param6);
Parameters
T_STRING_NULL(1) // char*
number
T_STRING_NULL(3) // char*
number
Description:
TODO: Document this
Return value:
Return number