Is it possible to override a property during runtime after the file has been load using BridgePropertyPlaceholderConfigurer

Is it possible to override a property on runing time after the file has been
load using BridgePropertyPlaceholderConfigurer

<bean id="bridgePropertyPlaceholder"
class="org.apache.camel.spring.spi.BridgePropertyPlaceholderConfigurer" >
<property name="location" value="classpath:settings.properties"/>
</bean>

setting.properties has:
source=activemq
name=master

After camel has been started I like the change values of source and name
based of an algorithm to something else.
This is not unittest code.

Alireza Salemi