GEE try to get LST time series data - libgee

Question

I try to get Daily LST data from Google Earth Engine.
Here is my code;
// Import image collection
var modis = ee.ImageCollection('MODIS/061/MOD11A1');
// A start date is defined and the end date is determined by advancing 1 year from the start date.
var start = ee.Date('2012-01-01');
var dateRange = ee.DateRange(start, start.advance(1, 'year'));
// Filter the LST collection to include only images from time frame and select day time temperature band
var modLSTday = modis.filterDate(dateRange).select('LST_Day_1km')
.map(function(image){return image.clip(studyArea)});
// Scale to Kelvin and convert to Celsius, set image acquisition time.
var modC = modLSTday.map(function(image) {
return image
.multiply(0.02)
.subtract(273.15)
.copyProperties(image, ['system:time_start']);
});
//Convert data to bands
var daily = modC.toBands();
//Creating sample points in the given geometry(study area; assets or simple rectangle)
var Sample_points = daily.sampleRegions({
collection: studyArea,
scale: 500,
geometries: true
});
//Getting LST values from sample points
var collection_with_latlon = Sample_points.map(function (feature) {
var coordinates = feature.geometry().transform('epsg:4326').coordinates();
return feature.set('lon', coordinates.get(0), 'lat', coordinates.get(1));
});
My problem is daily variable is not create sample points and does not get LST values. I used the same code for NDVI data, it works perfectly but in LST data it is not working.
when I use the;
var Sample_points = daily.select(2).sampleRegions({
collection: studyArea,
scale: 500,
geometries: true
});
SampleRegions works and gets LST values to the csv table in my drive. But it works for just one image. I need to get 366 images (a year) data.
Please give me some help...