How To Pass RowLImit in CAMEL QUERY Dynamically

Question

in my web part i have propety

 

private int _itemlimit;
[WebBrowsable(true)]
[Personalizable(PersonalizationScope.Shared)]
[Category("Custom Properties")]
[WebDisplayName("Item Limit")]
public int itemlimit
{
get
{
return _itemlimit;
}
set
{
_itemlimit = value;
}
}

 

 

i want to use itemlimit dynamically . now i am passing it in camel query like:

 

SPQuery qry = new SPQuery();
qry.Query = "<Where>" +
"<IsNotNull>" +
"<FieldRef Name='Title' />" +
"</IsNotNull>" +
"</Where>"+
"<RowLimit>"+this.itemlimit+"</RowLimit>"; 

 

 

but its not working..........