Hi Team am trying to add filter based on how many bars i need to check when i update the selected input values. so am trying to add max 5 input values in dropdown. so when i add 5input values in dropdown then the result is showing, but when i select less then 5 or greater than 5 values in dropdown then the report showing blank page. can you help me how to solve the issue. below am sharing the screenshot

and the code am sharing

<?php
	use \koolreport\inputs\Select;
    //use \koolreport\morris_chart\Bar;
	use \koolreport\widgets\google\ComboChart;
	use \koolreport\inputs\BSelect;
     use \koolreport\widgets\google\PieChart;
	 use \koolreport\widgets\google\BarChart;
	  use \koolreport\inputs\MultiSelect;
	 
	 $category_amount = array(
        array("category"=>"Books","sale"=>32000,"cost"=>20000,"profit"=>12000),
        array("category"=>"Accessories","sale"=>43000,"cost"=>36000,"profit"=>7000),
        array("category"=>"Phones","sale"=>54000,"cost"=>39000,"profit"=>15000),
        array("category"=>"Movies","sale"=>23000,"cost"=>18000,"profit"=>5000),
        array("category"=>"Others","sale"=>12000,"cost"=>6000,"profit"=>6000),
    );
   
?>

	<form method="post">
        <div class="row" style="text-align:center;">
		<div class="col-md-3"></div>
		   <div class="col-md-2 form-group" >
                <label class="control-label"><strong>Select Columns*:</strong></label>
                    <?php
                       BSelect::create(array(
						"name"=>"columns",
						"id"=>"columns",
						"multiple"=>true,
						"dataStore"=>$this->dataStore("columnsdata"),
						"dataBind"=>array(
                        "text"=>"COLUMN_NAME",
                         ),
						"limit"=>5,
						
						));
						
				
						
					?>            
          </div> 
		  
           <div class="col-md-2 form-group">
      <button id="pfbutton" name="pfbutton" style="margin-top: 20px;
padding: 8px 10px;
margin-left: -40px;" class="btn btn-lg btn-primary">Update</button>
           </div>
		   <div class="col-md-2"></div>							
        <!-- <pre><code><?php echo json_encode($this->params,JSON_PRETTY_PRINT) ?></code></pre> --> 
    </form>
	    </div>

<div class="report-content">

    <div class="table-responsive" style="width: 100%;max-width: 100%;margin-top: 50px;margin-left: 0px !important;">
	<?php
	//if(isset($_POST['pfbutton'])){
		
    if($this->dataStore("result")->countData()>0)
    {
		
		$strColumn_array = $this->params["columns"];
		$colcount= count($strColumn_array);
	
		
		$strString0;
		$strString1;
		$strString2;
		$strString3;
		$strString4;
		
		if($colcount>=1){
		$strString0=$strColumn_array[0];
		}
		if($colcount>=2){
		$strString1=$strColumn_array[1];
		}
		if($colcount>=3){
		$strString2=$strColumn_array[2];
		}
		if($colcount>=4){
		$strString3=$strColumn_array[3];
		}
		if($colcount>=5){
		$strString4=$strColumn_array[4];
		}
	
		
    ComboChart::create(array(
	    "title"=>"Total Callings:",
        "dataSource"=>$this->dataStore("result"),
        
		// start x-axis single
		"columns"=>array(
			"appointmentName",
          // end x-axis 
		  
		  
		  
			// start Y-axis loop
			
			
			//if($colcount>=1){	
			$strString0=>array("label"=>"$strString0","type"=>"number"),
				"saleAnnotation0" => array(
                "role" => "annotation",
                "formatValue" => function($value, $row) {
                    return $row["$strString0"];
                },
				),
			//}
			//if($colcount>=2){
			$strString1=>array("label"=>"$strString1","type"=>"number"),
			    "saleAnnotation1" => array(
                "role" => "annotation",
                "formatValue" => function($value, $row) {
                    return $row["$strString1"];
                },
				),
			//}
			//if($colcount>=3){
			$strString2=>array("label"=>"$strString2","type"=>"number"),
			    "saleAnnotation2" => array(
                "role" => "annotation",
                "formatValue" => function($value, $row) {
                    return $row["$strString2"];
                },
				),
			//}
			//if($colcount>=4){
			$strString3=>array("label"=>"$strString3","type"=>"number"),
			    "saleAnnotation3" => array(
                "role" => "annotation",
                "formatValue" => function($value, $row) {
                    return $row["$strString3"];
                },
				),
			//}
			//if($colcount>=5){
			$strString4=>array("label"=>"$strString4","type"=>"number"),
			    "saleAnnotation4" => array(
                "role" => "annotation",
                "formatValue" => function($value, $row) {
                    return $row["$strString4"];
                },
				),
			//}
			
			
				
				// end Y-axis loop
				
			
			
        )
    ));
	
	
	
	?>
		<div class="alert">
            </i>Note:The Above Provided Bar Charts Represents Appointment wise calls details
        </div>
		<?php
	}
	
	else
    {
    ?>
      <div class="alert alert-warning">
            <i class="glyphicon glyphicon-info-sign"></i> Sorry, we found no data
        </div> 
		
    <?php    
    }
	//}
    ?>
    </div>

thanks you it is working but am using loop like this

$columns = array("appointmentName" => array("label"=>"Appointment Name","type"=>"string"));

	for ($i=0; $i <$colcount; $i++){
	 $columnName=$strColumn_array[$i];
	 $columns[$columnName]=array("appointmentName" => array("label"=>$columnName,"type"=>"number"));
	 $columns["saleAnnotation" .$i]=array(
			"role" => "annotation",
            "formatValue" => function($value, $row) use ($columnName){
			return $row[$columnName];	
			},
			);
	}

And here I added another filter for the x-axis. same like the selected values need to update combo chart x-axis. below am sharing screenshot

the y-axis filter working fine but am adding x-axis so am adding this code

$rowfilter= isset($_POST['appointmentId'])? $_POST['appointmentId'] : '';



$rowfilterdata=$this->dataStore("appointmenttypes")->appointmentId(function ($row) use ($rowfilter){
			if(empty($rowfilter)){
				return true;
			}
			elseif($row['appointmentId'] === $rowfilter){
				return true;
			}
			return false;
		});

hi, am still waiting for your reply