I am looking for a way to add a technical indicator, specifically WILR, to my fundamental screener. I was attempting to add it as WILR(x, 14, Resolution.Daily) when I was using the for x in x declaration of the 'fine' screen. 


However I kept getting errors; I cannot find much besides scripts that are only using SPY or some other singular symbol for WILR. However, I want to use it to screen my 'universe' for when WILR[-1] < -80 and WILR > -80 


Any help is appreciated!