If you specify a variable name, then that variable is deleted. If you specify a prefix and recursive is true, then all variables with that prefix are deleted. You must set a recursive to true if you delete variables by prefix.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2018-10-17 UTC."],[[["This API allows for the deletion of a single variable or multiple variables that share a common prefix."],["The `name` path parameter specifies the variable to be deleted using a specific format, and requires `runtimeconfig.variables.delete` IAM permission."],["The `recursive` query parameter, when set to `true`, enables the deletion of multiple variables that share the specified prefix."],["The request body must be empty for this operation, and a successful response will also have an empty body."],["Authorization for this API requires one of two specified OAuth scopes, outlined in the Authentication Overview."]]],[]]