The MQSetStringProperty function sets an MQString property with the specified key to the specified value.
| MQSetStringProperty
                 (const MQPropertiesHandle propertiesHandle,
                  ConstMQString key,
                  ConstMQString value); | 
MQStatus. See the MQStatusIsError() function for more information.
A handle to the properties object whose property value for the specified key you want to set. You get this handle from the MQCreateProperties() function.
The name of a property key. The library makes a copy of the property key
The property value to set. The library makes a copy of the value.
The library makes a copy of the property key and also makes a copy of the value.