Enabling math in js mode

Spreadsheet
#1

How should one ebable math in js mode??

[code]

.ssheet_cont { width: 99%; height: 100px; float: left; } 
<script>
	var dhx_sh1
	window.onload = function() {
		dhx_sh1 = new dhtmlxSpreadSheet({
			load: "../codebase/php/data.php",
			save: "../codebase/php/data.php",
			parent: "gridobj1",
			icons_path: "../codebase/imgs/icons/",
			autowidth: false,
			autoheight: false
		}); 
		//
		dhx_sh1.load("1");
		dhx_sh1.init();

		alert ("Welcome to Aspiring Minds Pvt Ltd");
		
		// working functions
		//alert(dhx_sh1.getColIndex("B"));
		//alert(dhx_sh1.getCellValue(1,1)); not working
	};
	
	function check_result() {
		
			alert(dhx_sh1.grid.cells(5,1).getValue());
	}
</script>

<div class="ssheet_cont" id="gridobj1"></div>

</br>
 <div id = "button" align="center">
<button type="button" onclick="check_result()" >Check result</button>
[/code]
#2

Hi,
you should add parameter math: true in initialization config object.