How to read properties from CamelContext in a Camel route

Issue

• I would like to read a property set in CamelContext using Camel's DSL language.
• In Route #1 I will call a Java method where I will set a property "ABC" into exchange.getContext().setProperties(). In the same CamelContext Route #2 I would like to read the property value.

• I tried both of the following options, but they did not work:

  <simple>{{ABC}} == 'true'</simple>
  

  or:

  <simple>${properties:ABC} == 'true'</simple>
  

• The Simple expression "${property.ABC}" does not work, as it refers to a property stored in Exchange, not in CamelContext.