what's the use of cols in textarea?

Hi,

In my application I have text area as columns in a table. I want to enter limited characters in a row.

So that I applied cols : 20, with out giving width. But I can entering more than 20 characters in a row.

How to restrict the no of columns in a row when entering data in text area?

For this, i tried with with keyup event also.But it's working fine when I am using normal text area.But in my application I am using text area as column in a table .So that, I am not getting any alert in keyup event.

Here is my code to create table.

var oTable = new sap.ui.table.Table({

title: "Table Example",

visibleRowCount: 7,

firstVisibleRow: 3,

selectionMode: sap.ui.table.SelectionMode.Single,

toolbar: new sap.ui.commons.Toolbar({items: [

new sap.ui.commons.Button({text: "Button in the Toolbar", press: function() { alert("Button pressed!"); }})

]}),

extension: [

new sap.ui.commons.Button({text: "Button in the Extension Area", press: function() { alert("Button pressed!"); }})

]

});

oTable

.addColumn(new sap.ui.table.Column(

{

label : new sap.m.Label({

text : "C. Behaviours"

})

.addStyleClass('noMargin noPadding fontSmall'),

template : new sap.m.TextArea(

{

rows : 3,

cols : 20,

// width : '100%',

placeholder : "HOW the employee demonstrated Fortescue\'s Values whilst achieving the role/business objectives.",

maxLength : 500,

editable : true,

}).bindProperty("value",

"values"),

sortProperty : "values",

filterProperty : "values",

width : "30%",

resizable : false,

}));

Please help me to solve this.

Thanks&Records

Sridevi