How to evaluate a nested variable in expression using FEEL json?

Camunda 8 Topics
1

Hi all!
How to evaluate a nested variable in expression using FEEL json?

eg., eval $z

{
“z”: “($x = ‘a’) or ($x = ‘b’ and $y = ‘c’)”,
“x”: “a”,
“y”: “c”
}
note: the value of ‘z’ in json is an expression and it can be dynamic

2

Hi @Yogapriya - this expression only works if x and y are already defined before the expression is called. If they were already defined, it would return a context (object) that looked like:

{
  "z": True,
  "x": "a",
  "y": "c"
}

You can think of this expression almost like a function: it takes an “input”, then returns a value based on that input.

From your other topic, you’re trying to figure out how to get your exclusive gateway to work. I think trying to model it with BPMN would be a good first step, then share the model here and we can better assist with how to get the needed result.

(Side note: the $ isn’t needed to reference a variable in FEEL.)

3

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