I am new to power automate and have been trying to link a form to the tasks planner to automate the workflow for my team.
I have been following some video tutorials and have got a bit stuck.
MS Forms to Planner Tasks - Part 3 (youtube.com)
The append to array variable throws the error "enter a valid json" as far as I can tell the json is in the correct format.

When I close this with square parenthesis, the flow fails with the message:
Cannot set child value 'microsoft.graph.plannerChecklistItem' on Newtonsoft.Json.Linq.JValue:'[
{
"ID":0
"Title":Method statement
"IsChecked":False
}
]'