Using expressions
Expressions are structured strings that are parsed and evaluated by Talend Cloud API Tester.
You can use expressions in the following places:
- Request URL
 - Headers (name and value)
 - Query parameters (name and value)
 - Form parameters (name and value)
 - Request body (of type text)
 - Assertions values
 
They allow you to:
- Reference environment variables by name
 - Reference other request elements by name
 - Manipulate your data
 
Expressions can only reference a request element, an environment variable or a method. You cannot reference a whole project, service or scenario.
Talend Cloud API Tester does not support numbers higher than 9,007,199,254,740,991. Higher numbers may be automatically modified.
For example, if a request body contains the number
            900719925474099324686842, it appears as follows in the
            Expression Builder:
            
          
      
      
         A notification appears when a number is not supported, you can disable these notifications in .