docs: def setp(self, name, value=None, bounds=None, free=None, errors=None):
          """ 
          Set the value (and bounds) of the named parameter.
  
          Parameters
          ----------
          name : string
              The parameter name.
          value: 
              The value of the parameter
          bounds: None
              The bounds on the parameter
          Returns
          -------
          None
          """
          name = self._mapping.get(name,name)
          self.params[name].set(value,bounds,free,errors)
          self._cache(name)