DelegateExpression use in spring boot

[shaktiprasadrath]

Hi,
If the below question is redundant then pardon me.

When i am using Delegate Expression, I can either use ${expressionName} or #{ExpressionName}. What is the difference between them in terms of using it in spring boot? Any example will be appreciable.

[AdamLiberadzki]

Hi @shaktiprasadrath ,

I don’t think it is really spring boot specific. This notation comes from Java EL specification: Immediate and Deferred Evaluation Syntax (The Java EE 6 Tutorial, Volume I)
I believe it does not make any difference.

The topic was already discussed here:

'$' vs '#' usage in expressions

The symbols were confusing whether to use ‘$’ or ‘#’ in expressions. Lets say i have a process variable “assignee”, in bpmn file should i have to mention ${assignee} or #{assignee}. In forums, i saw many of them posted using ‘#’ in expressions. Which one is valid and when to prefer one against another?