Define variable in Ansible according complex condition - if-statement

Question

I need to define a variable in ansible according several conditions
I know the syntax
VARtodefined: "{{ 'Value1' if condition1 else 'Value2' }}"
I know I have the same result with the following other syntax
VARtodefined: "{% if condition1 %}'Value1'{% else %}'Value2'{% endif %}"
but I don't find the correct syntax for multiple condition (if-elsif-elsif-else)
I have for instance tried this without success
VARtodefined: "{% if condition1 %}'Value1'{% elsif condition2 %}'Value2'{% else %}'Value3'{% endif %}"
If have tried variant with elif, elseif but also without success
In my specific case condition1 is OtherVar==XXX and condition2 OtherVar==YYY (so in both case it depends the value of OtherVar)
So I'm looking for a working solution for this
VARtodefined: "{% if OtherVar==XXX %}'Value1'{% elsif OtherVar==YYY%}'Value2'{% else %}'Value3'{% endif %}"
If have found a workaround to achieve my goal but I'm interested to know the correct syntax for future projects

Answer 1

The example of the correct syntax is below. The task
- debug:
msg: "{% if item=='XXX' %}Value1
{% elif item=='YYY' %}Value2
{% else %}Value3
{% endif %}"
loop: [XXX, ZZZ]
gives
msg: 'Value1 '
msg: 'Value3 '
A simpler solution is putting the logic into a dictionary. For example
conditions:
XXX: Value1
YYY: Value2
default: Value3
Then, use it
- set_fact:
VARtodefined: "{{ conditions[OtherVar]|
default(conditions.default) }}"

Answer 2

this is the expected syntax: if - elif/else - endif
please see and try example PB below:
---
- hosts: localhost
gather_facts: false
vars:
X: 2
tasks:
- set_fact:
VARtodefined: "{% if X == 1 %}Value1{% elif X == 2 %}Value2{% else %}Value3{% endif %}"
- debug:
var: VARtodefined