Object userValue can stay NULL if configuration parameter type none of these values - TYPE_INTEGER, TYPE_INTEGER, TYPE_FILE, but execute method cannot handling NULL pointer.

/src/zabbix_java/src/com/zabbix/gateway/ConfigurationParameter.java:

CID 155649: Explicit null dereferenced (FORWARD_NULL)6. var_deref_model: Passing null pointer userValue to execute, which dereferences it.

if (null != postValidator)
	postValidator.execute(userValue);