Not able to set array in Form

Hello,
I am using Flowable Designer where I need to set form input field value to something like this: {{root.approvers[loopCounter].reviewComments}} but it is giving error “property.value.title does not match”.
I am trying tutorial chapter 9 of Flowable documentation. Link to tutorial https://documentation.flowable.com/modeler-expert/3.5.0/09-expert.html

Could you please help me why it is not binding the form input field value?

I assume you’re talking about Flowable Design? If so the question should be asked here: https://forum.flowable.com/ (this is the open source forum)