How does GTT work in this case

If today, after the market closing, the price of a Stock X was 1000 and I have speculated that the price will go down tomorrow. If I put a GTT SELL order on my bought stocks tonight with Trigger Pice: 995 and Price: 990, and the stock opens below 6% negative @994, will my GTT order get triggered?

LTP of Stock X = 1000
Opening price tomorrow = 994
GTT trigger = 995

PS: My stategy is - If i have #100 stocks today then basically I will make short trade and buy more quantity when market close( new quantity #101)

It will trigger and your order will be released at limit 990.