Hi, I’m new to developing on Monday.com and I need some help formatting a graphQL query using the monday.com client. I’ve tried just about everything I can think of but continue to run into errors!

Here’s my code:

try {
		const mondayClient = initMondayClient();
		mondayClient.setToken('MyAccessToken');
		mondayClient.setApiVersion('2024-04');

		const query = `mutation create_item($board_id: ID!, $my_item_name: String!, $columnVals: JSON!) {
				create_item(board_id: $board_id, item_name: $my_item_name, column_values: $columnVals) { 
					id
				}
			}`;
		const vars = {
		    "my_item_name" : "Newest Purchase",
		    "board_id": '11111111111',
		    "columnVals" : JSON.stringify({
			    "status45" : {"label" : "Under Review"},
			    "status4" : {"label" : "J199"}, //Project #
			    "dropdown" : {"dropdown" : "MCMaster"}, //Vendors
			})
		};

		const response = await mondayClient.api(query, vars);
		console.log(response);
	} catch (err) {
		console.log(err);
	}

The most common error I see is this:
“Variable $board_id of type ID! was provided invalid value”
“Variable $my_item_name of type String! was provided invalid value”
“Variable $columnVals of type JSON! was provided invalid value”

I’ve also tried formatting the variables like this:

const vars = {
		    "my_item_name" : "Newest Purchase",
		    "board_id": '1111111111',
		    "columnVals" : "{\\"status45\\" : \\"Under Review\\", \\"status4\\" : \\"J199\\"}"
		};

same errors.

This code works great if I run it through a javascript fetch function rather than through the monday client. Which is why I know it’s just a formatting issue.

Obviously in my real code I use the correct token, and board_ID.

Please help! I’m not sure what I’m doing wrong.