How to show spreadsheet name in Logger - google-apps-script

Question

I am trying to get a chart from spreadsheet A. I take this into a Chart object, and try to put it back in spreadsheet B.
I always get an 'unknown sheetname' error. I have been trying to put new ranges in the new chart, as you can see in the code. When I do a Logger.log(newrange.getSheet()) I indeed get Sheet instead of SHEETNAME, like the chart builder messes with the sheetnames.
What is happening?
function updateCharts() {
var ss = SpreadsheetApp.openById("ID");
var sheet = ss.getSheetByName("SHEETNAME");
var charts = sheet.getCharts();
var ss2 = SpreadsheetApp.openById("NEW ID");
var sheet2 = ss2.getSheetByName("SHEETNAME");
for (var c=0; c<charts.length; c++) {
var chart = charts[c];
var ranges = chart.getRanges();
var type = chart.getType();
var info = chart.getOptions();
var builder = chart.modify();
var range = ranges[0];
builder.removeRange(range);
var startRow = range.getRow();
var startCol = range.getColumn();
var numRows = range.getNumRows();
var numCols = range.getNumColumns();
var newrange = ss2.getSheetByName("statistiek").getRange(startRow, startCol, numRows, numCols);
Logger.log(newrange.getSheet());
builder.addRange(newrange);
var title = chart.getOptions().get('title')
builder.setOption('title', title + " " + p);
var newchart = builder.build();
ss2.getSheetByName("statistiek").insertChart(newchart);
}
}

Answer 1

Logger.log() requires a string, but you're feeding it an object with newrange.getSheet(). Try this instead, if you want the sheet's name:
Logger.log(newrange.getSheet().getName())
To see the names of all sheets in a spreadsheet, try:
var ss = SpreadsheetApp.openById("ID");
var allSheets = ss.getSheets();
for (i in allSheets) {
Logger.log("Sheet " + i + " is named " + allSheets[i].getName());
}