How to use Helm Flow Control with Argocd list Generator

[lequocanh662000]

apiVersion: argoproj.io/v1alpha1
kind: ApplicationSet
metadata:
  name: argocd-appsets
  namespace: argocd
spec:
  generators:
    - list:
        elements:
          - appName: frontend1
            env: dev
            server: https://kubernetes.default.svc
          - appName: frontend2
            env: stg
            server: https://kubernetes.default.svc
  template:
    metadata:
      name: '{{ printf "{{env}}" }}-{{ printf "{{appName}}" }}'
      annotations:
        notifications.argoproj.io/subscribe.sync-operation-change.slack: ilt-argo-notifications
    spec:
      project: default
      source:
        repoURL: https://gitlab.com/inspirelab/guild/guild-infra-argocd.git
        targetRevision: HEAD
        path: helm/{{ printf "{{appName}}" }}/{{ printf "{{env}}" }}
      destination:
        server: '{{ printf "{{server}}" }}'
        namespace: '{{ printf "{{env}}" }}-{{ printf "{{appName}}" }}'

      {{- if eq {{ printf "{{env}}" }} "dev" }}
      syncPolicy:
        syncOptions: 
        - CreateNamespace=true
        automated:
          selfHeal: true
        prune: true
      {{ else }}
      syncPolicy: {}
      {{- end }}

My goals: Deploy multiple applications in different environments (dev, staging, production) -> So, I use Argocd list generator + Applicationset file + Helm to achieve that.
The Error occur in the if statement.
The Error log is:

Error: INSTALLATION FAILED: parse error at (mychart/templates/appsets.yaml:31): unexpected "{" in operand

Can u guys please help me. I am just a newbie

[dbaudracco]

This is not going to work because the value of the env variable is only known to the ApplicationSet when it generates the Applications and not to Helm when it generates the manifest for the ApplicationSet.
As far as I know the ApplicationSet doesn't support if statements.