Can you define an execution variable based on the value of another execution variable?

I want to have an execution variable defined during the execution of a test script, with the value dependent on the value of another execution variable. Execution Variable 1 would be defined at the test suite level. At the start of the execution, the user would enter a value specific to that execution. In a later test case, I want to have Execution Variable 2 defined as the value the user entered in Execution Variable 1 appended with a constant text string. For example, if the user entered "Test" for Execution Variable 1 at the start of the execution, I would like Execution Variable 2 defined in Test Case 4 to be defined as "TestXYZ" without any user input required and where "XYZ" is a constant string appended to Execution Variable 1 to create Execution Variable 2 every time the test case is executed. Is this possible?