At 9:15, this will not yield any relevant result because of the logic mentioned by @prash_u and @maddy_Des.
But lets assume that you want to use this strategy after 9:45 AM using the high of the first 30 min, you need to use the below mentioned conditions-
Entry: Opening Range (Open, 30 min) equal to Opening Range (Low, 30 min)
The opening range marks the first candle and the candle length can range from 1 min to 1 day as per the users discretion.