Cost Data Upload via Google Analytic's Management API with Google Sheets

costdata.gs

function uploadData() {
    var accountId = "xxxxxxxx";
    var webPropertyId = "UA-xxxxxxxx-x";
    var customDataSourceId = "xxxxxxxx";
    var ss = SpreadsheetApp.getActiveSpreadsheet().getActiveSheet();
    var maxRows = ss.getLastRow();
    var maxColumns = ss.getLastColumn();
    var data = [];
    for (var i = 1; i <= maxRows; i++) {
        data.push(ss.getRange([i], 1, 1, maxColumns).getValues());
    }
    var newData = data.join("\n");
    var blobData = Utilities.newBlob(newData, "application/octet-stream", "GA import data");
    try {
        Logger.log(blobData.getDataAsString())
    } catch (err) {
        Logger.log(err)
    }
    try {
        var upload = Analytics.Management.Uploads.uploadData(accountId, webPropertyId, customDataSourceId, blobData);
        SpreadsheetApp.getUi().alert("Uploading: OK");
    } catch (err) {
        SpreadsheetApp.getUi().alert(err);
    }
}

thanks for pointing out the potential error @pbkool
I've updated the code to add the try and catch