Can not insert whitespace in Dojo textbox -

i insert dijit.form.textbox in dojo datagrid

function getvalue(value, rowindex, cell) {     var mytextbox = new dijit.form.textbox({         value: value,         style: "width:60px",         onchange: function(event){             var itemid = grid.getitem(rowindex).id[0];             dojo.foreach(store._arrayofallitems, function(selecteditem) {                 if(selecteditem! = null && itemid == selecteditem.id[0]) {                     selecteditem.col4[0]=event;                 }             });          }     });     return mytextbox; } 

i can not insert whitespace in textbox in place. please me fix it.