Problems to read from a recordset

I having this error everytime I need to use an item from my recordset:

ResponsablePropuesta.Observaciones
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.IndexOutOfRangeException: ResponsablePropuesta.Observaciones

Source Error:





Line 26: 'txtMargen.Text = RSq("ResponsablePropuesta.Margen")
Line 27: 'txtOBS.Text =
Line 28: Response.Write(RSq("ResponsablePropuesta.Observaciones"))
Line 29:
Line 30: End If
Source File: C:\Docum ...