WorksiteWeb profile

Juanki

Hello, I'm doing a new skill as aspx using worksite web searching items.
Is there any way to include the description of a custom into the texbox?
I've tried with the DisplayAlias parameter but it doesn't work.
Here a piece of my code:
......script type="text/javascript">profile = new Profile(profileTypeEnums.Document, 'form3', true);profileItem = new ItemTextBox(25, profile);profileItem.Title = "Ámbito";profileItem.ReadOnly = false;profileItem.Width = "80%";profileItem.Name = "custom-1";profileItem.Description = "";profileItem.Value = "";profileItem.ErrorMsg = "";profileItem.IsRequired = false;profileItem.ShowLookup = true;profileItem.DataType = profileDataEnums.String;profileItem.Dependent = "custom-2";profileItem.Parent = "";profileItem.Hidden = false;profileItem.DisplayAlias = false;profile.AddItem(profileItem);....
............writeProfile();</script
input type="button" onclick="javascript&colon;validateAdvancedSearch('form3')" value="Buscar Documentos" />....

Thank you in advance for your help.