String Substitution Limitations

Nested substitution is not supported.

Example

You have created the following variables:

VAR1="{VAR2}"

VAR2="HELLO WORLD"

And the expression:

{VAR1}

The expression after substitution will be the string "{VAR2}".

The expression will not be reevaluated to yield the result "HELLO WORLD".

More information

Option 4.3.2. Use string expressions.