text: 
  function weekshiftdown(data) {
  	if(data != 0){
  
  
  		//update the labels
  		week_shift_down.data.labels = data[2];
  		const down = data[1];
  		const len = down.length;
  		for(let i = 0 ;i<len; i++){
  			week_shift_down.data.datasets[i].data = down[i];
  		}
  		week_shift_down.update();
  	}else{
  
  		
  	}
  }