I am currently trying to create a screen and template for a subset of 58 utility companies. I am doing this through Refinitiv SCREENER however I intend to use the formulas from the screener to connect via the Eikon API in python with the ek.get_data function. My problem stems for the fact that I am trying to find the high and low price during any given day. The High Price and Low Price are showing as NA in every row. Why is this? 