C language invocation

mqAddBag (Bag, Selector, ItemValue, &CompCode, &Reason)

Declare the parameters as follows:

MQHBAG   Bag;       /* Bag handle */
MQLONG   Selector;  /* Selector */
MQHBAG   ItemValue; /* Nested bag handle */
MQLONG   CompCode;  /* Completion code */
MQLONG   Reason;    /* Reason code qualifying CompCode */