code: @Override
  	public void setVal(String fldName, Constant val) {
  		rf.setVal(fldName, val);
  	}
docs: Sets the value of the specified field, as a Constant.
  
  @param val
  the constant to be set. Will be casted to the correct type
  specified in the schema of the table.
  
  @see UpdateScan#setVal(java.lang.String, Constant)