My checkbox column is always getting ticked even though I am setting up as false when I created the item. Please see the mutation query below; the column name is Premier Deal (Check).
mutation { create_item (board_id: 3081121074, group_id: “topics”, item_name: “Test Account Atul (111111)”,column_values: “{"check":{"checked": "false"},"text":"GBP","link" : {"url" : "https://inkglobal--inkuat.my.salesforce.com/lightning/r/Opportunity/0060C00000A1Wxu/view\”, "text" : "https://inkglobal--inkuat.my.salesforce.com/lightning/r/Opportunity/0060C00000A1Wxu/view\"},\"link_to_client_database\" : {"item_ids" : [3134536039]},"numbers4":"1208.00","timeline" : {"from" : "2022-07-01 00:00:00", "to" : "2023-06-01 00:00:00"},"text7":"0060C00000A1WxuQAF","text8":"Test Thompson","text2":"easyJet Navigator;","text_1":"*****@ink-global.com","text_2":"8805984864","numbers":"1208.00"}") { id group{id title} board{id name} }}