The <env> element has the following attributes. They can reference simple substitution variables.
name – A required attribute that is the name of the environment variable. The value should be a nonempty string.
value – A required attribute that is the value of an environment variable. The value can contain ${var-name} strings to refer to the values of the remote agent's environment variables. If var-name refers to a variable that is overridden by an <env> element, the substituted value is the one that is defined in the remote agent's environment, not the overridden one. If the string ${ must appear in the value, escape this string by using ${{. All instances of ${{ are replaced by ${.