//Addacheckboxgriditemtoaformandrestrictittooneresponsepercolumn.varcheckboxGridItem=form.addCheckboxGridItem();checkboxGridItem.setTitle('Where did you celebrate New Years?').setRows(['New York','San Francisco','London']).setColumns(['2014','2015','2016','2017']);varcheckboxGridValidation=FormApp.createcheckboxGridValidation().setHelpText(“Selectoneitempercolumn.”).requireLimitOneResponsePerColumn().build();checkboxGridItem.setValidation(checkboxGridValidation);
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2018-06-26 UTC."],[[["`CheckboxGridValidationBuilder` helps create validations for checkbox grid items in Google Forms."],["It allows setting restrictions like limiting responses to one per column."],["The `requireLimitOneResponsePerColumn()` method enforces this single response restriction."],["This builder is used with `setValidation()` on a checkbox grid item to apply validation rules."]]],[]]
