Problem with adding two collumns with Float Values.

I am trying to add the values of two collumn each having float values but the numbers after the point are discarded in the grid , it automatically performs the rounding operation.

I am new to DHTMLx, just started learning. Any help would be appriciated.
My code looks likes the::
var mygrid = new dhtmlXGridObject(‘gridbox’);

            mygrid.setHeader("Shop,#cspan,#cspan,#cspan,Delivery,#cspan,#cspan");
	mygrid.attachHeader("Sales,Book,#cspan,Price,Is available,Date,Sum");
	mygrid.attachHeader("#rspan,Title,Copies,#rspan,#rspan,#rspan,#rspan");
            mygrid.setNumberFormat("0,000.00","Sum",".",",");
            mygrid.setNumberFormat("0,000.00","Price",".",",");
            mygrid.setNumberFormat("0,000.00","Copies",".",",");
            mygrid.setMathRound(3);
	mygrid.setInitWidths("50,150,150,100,70,*,*")
	mygrid.enableMultiline(true)
	mygrid.setColAlign("right,left,left,right,center,center,center")
	mygrid.setColTypes("ro,ed,ed,ed,ch,ed,ro[=c2+c3]");		
	mygrid.setSkin("dhx_skyblue")
	
            mygrid.init();

This is the known bug of dhtmlxgrid 3.5 and it is already fixed.
Please, open ticket at support.dhtmlx.com so we can provide you a fixed “dhtmlxgrid_math.js”.