Python API Add subscribers to Baord


Looking for some help whilst trying to add subscribers to a board using Python and the Monday API.

This is my code:

boardSubscribers = [25501753, 25614799, 25614800]

for i in boardSubscribers:

	groupNameMonth = calendar.month_name[month]
	boardName = f'{groupNameMonth} {year}'
	query = 'mutation ($boardName: String!, $boardSubscribers: Int!) {create_board (board_name: $boardName, board_kind: private, workspace_id: xxxxxx, board_subscriber_ids: $boardSubscribers) {id}}'

	vars = {
		'boardName' : boardName,
		'boardSubscribers' : i
	data = {'query' : query, 'variables' : vars}
	r =, json=data, headers=headers)

I am getting the following error …

This is a test: {‘errors’: [{‘message’: ‘List dimension mismatch on variable $boardSubscribers and argument board_subscriber_ids (Int! / [Int])’, ‘locations’: [{‘line’: 1, ‘column’: 140}], ‘fields’: [‘mutation’, ‘create_board’, ‘board_subscriber_ids’]}], ‘account_id’: xxxxxxx}
Traceback (most recent call last):
File “”, line 45, in
boardID = createBoard()
File “”, line 40, in createBoard
boardID = resp_dict[‘data’][‘create_board’][‘id’]
KeyError: ‘data’

I know its a mismatch in data but I just cannot see what I am doing wrong. Any help would be greatly appreciated.