Rating column - error on create

I’m trying to add a pulse to a group, all good but I want to insert a rating but regardless of how I try I can’t seem to do it:

{
“error_code”: “ColumnValueException”,
“status_code”: 400,
“error_message”: “change_column_value invalid value”,
“error_data”: {
“column_value”: “2”,
“column_type”: “RatingColumn”
}
}

I cannot find any documentation regarding types anywhere, the documentation is sadly very lacking.