Newbie help

Trying to register a constant value for a class and it keeps crashing. Learning C as I go, so I would appreciate some insight. I can figure out that my *property value is lost during zend_hash_add() but my knowledge stops there as to why. Tried passing property as property and &property. ZEND_METHOD(zboolean, __construct) { zval *object = getThis(); zval *property ALLOC_ZVAL(property); INIT_PZVAL(property); ZVAL_STRING(property, "true", 1); zend_hash_add(&(Z_OBJCE_P(object))->constants_table, "TrueString", sizeof("TrueString")+1, property, sizeof(zval *)); } Thanks Bob