changes the name of the property that affects binding of a calendar to a task/group of tasks
gantt.config.calendar_property = "property_name";
added in version 4.2
The default value of the option is "calendar_id".
{
"id":2,
"calendar_id":"custom",
"text":"Task #1",
"start_date":"02-04-2013",
"duration":"8",
"parent":"1",
"progress":0.5,
"open": true
}